Home / 133,140.55-183,733.02-72,711.21

Finding the Fourth Proportional to 133,140.55, 183,733.02 and 72,711.21

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Solution

The fourth proportional to 133,140.55, 183,733.02 and 72,711.21 is: 100,340.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,140.55 : 183,733.02 = 72,711.21 : x
  2. Step 2: Convert to fraction form
    133,140.55/183,733.02 = 72,711.21/x
  3. Step 3: Cross multiply
    133,140.55x = 183,733.02 × 72,711.21
  4. Step 4: Simplify right side
    133,140.55x = 13,359,450,201.15
  5. Step 5: Solve for x
    x = 13,359,450,201.15/133,140.55
  6. Step 6: Final answer
    x = 100,340.96

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1.5x scale

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.