Home / 119,131.20-178,437.60-72,302.40

Finding the Fourth Proportional to 119,131.20, 178,437.60 and 72,302.40

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Solution

The fourth proportional to 119,131.20, 178,437.60 and 72,302.40 is: 108,296.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,131.20 : 178,437.60 = 72,302.40 : x
  2. Step 2: Convert to fraction form
    119,131.20/178,437.60 = 72,302.40/x
  3. Step 3: Cross multiply
    119,131.20x = 178,437.60 × 72,302.40
  4. Step 4: Simplify right side
    119,131.20x = 12,901,466,730.24
  5. Step 5: Solve for x
    x = 12,901,466,730.24/119,131.20
  6. Step 6: Final answer
    x = 108,296.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.