Home / 102,778.04-141,830.70-57,456.12

Finding the Fourth Proportional to 102,778.04, 141,830.70 and 57,456.12

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Solution

The fourth proportional to 102,778.04, 141,830.70 and 57,456.12 is: 79,287.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,778.04 : 141,830.70 = 57,456.12 : x
  2. Step 2: Convert to fraction form
    102,778.04/141,830.70 = 57,456.12/x
  3. Step 3: Cross multiply
    102,778.04x = 141,830.70 × 57,456.12
  4. Step 4: Simplify right side
    102,778.04x = 8,149,041,718.88
  5. Step 5: Solve for x
    x = 8,149,041,718.88/102,778.04
  6. Step 6: Final answer
    x = 79,287.77

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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.