Home / 133,126.28-183,712.83-72,696.74

Finding the Fourth Proportional to 133,126.28, 183,712.83 and 72,696.74

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Solution

The fourth proportional to 133,126.28, 183,712.83 and 72,696.74 is: 100,320.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,126.28 : 183,712.83 = 72,696.74 : x
  2. Step 2: Convert to fraction form
    133,126.28/183,712.83 = 72,696.74/x
  3. Step 3: Cross multiply
    133,126.28x = 183,712.83 × 72,696.74
  4. Step 4: Simplify right side
    133,126.28x = 13,355,323,837.17
  5. Step 5: Solve for x
    x = 13,355,323,837.17/133,126.28
  6. Step 6: Final answer
    x = 100,320.72

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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.