Home / 91,214,105,839.36-125,830,735,536-79,154,190,021.76

Finding the Fourth Proportional to 91,214,105,839.36, 125,830,735,536 and 79,154,190,021.76

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Solution

The fourth proportional to 91,214,105,839.36, 125,830,735,536 and 79,154,190,021.76 is: 109,193,965,774.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,214,105,839.36 : 125,830,735,536 = 79,154,190,021.76 : x
  2. Step 2: Convert to fraction form
    91,214,105,839.36/125,830,735,536 = 79,154,190,021.76/x
  3. Step 3: Cross multiply
    91,214,105,839.36x = 125,830,735,536 × 79,154,190,021.76
  4. Step 4: Simplify right side
    91,214,105,839.36x = 9,960,029,951,194,371,719,168
  5. Step 5: Solve for x
    x = 9,960,029,951,194,371,719,168/91,214,105,839.36
  6. Step 6: Final answer
    x = 109,193,965,774.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.