Home / 128,432.15-192,594.01-38,487.62

Finding the Fourth Proportional to 128,432.15, 192,594.01 and 38,487.62

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Solution

The fourth proportional to 128,432.15, 192,594.01 and 38,487.62 is: 57,715.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,432.15 : 192,594.01 = 38,487.62 : x
  2. Step 2: Convert to fraction form
    128,432.15/192,594.01 = 38,487.62/x
  3. Step 3: Cross multiply
    128,432.15x = 192,594.01 × 38,487.62
  4. Step 4: Simplify right side
    128,432.15x = 7,412,485,071.16
  5. Step 5: Solve for x
    x = 7,412,485,071.16/128,432.15
  6. Step 6: Final answer
    x = 57,715.18

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1.5x scale

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.