Home / 154,638,142.74-213,387,923.52-91,048,373.46

Finding the Fourth Proportional to 154,638,142.74, 213,387,923.52 and 91,048,373.46

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Solution

The fourth proportional to 154,638,142.74, 213,387,923.52 and 91,048,373.46 is: 125,639,269.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,638,142.74 : 213,387,923.52 = 91,048,373.46 : x
  2. Step 2: Convert to fraction form
    154,638,142.74/213,387,923.52 = 91,048,373.46/x
  3. Step 3: Cross multiply
    154,638,142.74x = 213,387,923.52 × 91,048,373.46
  4. Step 4: Simplify right side
    154,638,142.74x = 19,428,623,352,502,876
  5. Step 5: Solve for x
    x = 19,428,623,352,502,876/154,638,142.74
  6. Step 6: Final answer
    x = 125,639,269.90

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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.