Home / 317,780.68-476,670.60-81,123.40

Finding the Fourth Proportional to 317,780.68, 476,670.60 and 81,123.40

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Solution

The fourth proportional to 317,780.68, 476,670.60 and 81,123.40 is: 121,684.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,780.68 : 476,670.60 = 81,123.40 : x
  2. Step 2: Convert to fraction form
    317,780.68/476,670.60 = 81,123.40/x
  3. Step 3: Cross multiply
    317,780.68x = 476,670.60 × 81,123.40
  4. Step 4: Simplify right side
    317,780.68x = 38,669,139,752.04
  5. Step 5: Solve for x
    x = 38,669,139,752.04/317,780.68
  6. Step 6: Final answer
    x = 121,684.99

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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.