Home / 42,117.39-63,179.19-12,130.43

Finding the Fourth Proportional to 42,117.39, 63,179.19 and 12,130.43

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Solution

The fourth proportional to 42,117.39, 63,179.19 and 12,130.43 is: 18,196.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,117.39 : 63,179.19 = 12,130.43 : x
  2. Step 2: Convert to fraction form
    42,117.39/63,179.19 = 12,130.43/x
  3. Step 3: Cross multiply
    42,117.39x = 63,179.19 × 12,130.43
  4. Step 4: Simplify right side
    42,117.39x = 766,390,425.86
  5. Step 5: Solve for x
    x = 766,390,425.86/42,117.39
  6. Step 6: Final answer
    x = 18,196.53

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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.