Home / 84,499.20-116,834.40-74,001.60

Finding the Fourth Proportional to 84,499.20, 116,834.40 and 74,001.60

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Solution

The fourth proportional to 84,499.20, 116,834.40 and 74,001.60 is: 102,319.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,499.20 : 116,834.40 = 74,001.60 : x
  2. Step 2: Convert to fraction form
    84,499.20/116,834.40 = 74,001.60/x
  3. Step 3: Cross multiply
    84,499.20x = 116,834.40 × 74,001.60
  4. Step 4: Simplify right side
    84,499.20x = 8,645,932,535.04
  5. Step 5: Solve for x
    x = 8,645,932,535.04/84,499.20
  6. Step 6: Final answer
    x = 102,319.70

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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.