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Finding the Fourth Proportional to 157,876.95, 236,655.82 and 67,978.29

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Solution

The fourth proportional to 157,876.95, 236,655.82 and 67,978.29 is: 101,898.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,876.95 : 236,655.82 = 67,978.29 : x
  2. Step 2: Convert to fraction form
    157,876.95/236,655.82 = 67,978.29/x
  3. Step 3: Cross multiply
    157,876.95x = 236,655.82 × 67,978.29
  4. Step 4: Simplify right side
    157,876.95x = 16,087,457,412.20
  5. Step 5: Solve for x
    x = 16,087,457,412.20/157,876.95
  6. Step 6: Final answer
    x = 101,898.71

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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.