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Finding the Fourth Proportional to 157,603.80, 236,276.10 and 83,731.80

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Solution

The fourth proportional to 157,603.80, 236,276.10 and 83,731.80 is: 125,528.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,603.80 : 236,276.10 = 83,731.80 : x
  2. Step 2: Convert to fraction form
    157,603.80/236,276.10 = 83,731.80/x
  3. Step 3: Cross multiply
    157,603.80x = 236,276.10 × 83,731.80
  4. Step 4: Simplify right side
    157,603.80x = 19,783,823,149.98
  5. Step 5: Solve for x
    x = 19,783,823,149.98/157,603.80
  6. Step 6: Final answer
    x = 125,528.85

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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.