Home / 145,432.14-217,924.65-86,149.86

Finding the Fourth Proportional to 145,432.14, 217,924.65 and 86,149.86

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Solution

The fourth proportional to 145,432.14, 217,924.65 and 86,149.86 is: 129,092.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,432.14 : 217,924.65 = 86,149.86 : x
  2. Step 2: Convert to fraction form
    145,432.14/217,924.65 = 86,149.86/x
  3. Step 3: Cross multiply
    145,432.14x = 217,924.65 × 86,149.86
  4. Step 4: Simplify right side
    145,432.14x = 18,774,178,088.05
  5. Step 5: Solve for x
    x = 18,774,178,088.05/145,432.14
  6. Step 6: Final answer
    x = 129,092.36

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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.