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Finding the Fourth Proportional to 104,995.61, 157,337.84 and 86,407.73

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Solution

The fourth proportional to 104,995.61, 157,337.84 and 86,407.73 is: 129,483.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,995.61 : 157,337.84 = 86,407.73 : x
  2. Step 2: Convert to fraction form
    104,995.61/157,337.84 = 86,407.73/x
  3. Step 3: Cross multiply
    104,995.61x = 157,337.84 × 86,407.73
  4. Step 4: Simplify right side
    104,995.61x = 13,595,205,165.46
  5. Step 5: Solve for x
    x = 13,595,205,165.46/104,995.61
  6. Step 6: Final answer
    x = 129,483.56

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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.