Home / 102,039.20-140,808.06-56,715.62

Finding the Fourth Proportional to 102,039.20, 140,808.06 and 56,715.62

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Solution

The fourth proportional to 102,039.20, 140,808.06 and 56,715.62 is: 78,264.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,039.20 : 140,808.06 = 56,715.62 : x
  2. Step 2: Convert to fraction form
    102,039.20/140,808.06 = 56,715.62/x
  3. Step 3: Cross multiply
    102,039.20x = 140,808.06 × 56,715.62
  4. Step 4: Simplify right side
    102,039.20x = 7,986,016,423.90
  5. Step 5: Solve for x
    x = 7,986,016,423.90/102,039.20
  6. Step 6: Final answer
    x = 78,264.20

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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.