Home / 100,732.32-139,011.60-56,020.64

Finding the Fourth Proportional to 100,732.32, 139,011.60 and 56,020.64

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Solution

The fourth proportional to 100,732.32, 139,011.60 and 56,020.64 is: 77,309.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,732.32 : 139,011.60 = 56,020.64 : x
  2. Step 2: Convert to fraction form
    100,732.32/139,011.60 = 56,020.64/x
  3. Step 3: Cross multiply
    100,732.32x = 139,011.60 × 56,020.64
  4. Step 4: Simplify right side
    100,732.32x = 7,787,518,799.42
  5. Step 5: Solve for x
    x = 7,787,518,799.42/100,732.32
  6. Step 6: Final answer
    x = 77,309.04

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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.