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Finding the Fourth Proportional to 131,402.88, 197,101.53 and 42,656.25

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Solution

The fourth proportional to 131,402.88, 197,101.53 and 42,656.25 is: 63,983.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,402.88 : 197,101.53 = 42,656.25 : x
  2. Step 2: Convert to fraction form
    131,402.88/197,101.53 = 42,656.25/x
  3. Step 3: Cross multiply
    131,402.88x = 197,101.53 × 42,656.25
  4. Step 4: Simplify right side
    131,402.88x = 8,407,612,139.06
  5. Step 5: Solve for x
    x = 8,407,612,139.06/131,402.88
  6. Step 6: Final answer
    x = 63,983.47

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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.