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Finding the Fourth Proportional to 131,790.88, 181,898.24 and 89,363.08

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Solution

The fourth proportional to 131,790.88, 181,898.24 and 89,363.08 is: 123,339.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,790.88 : 181,898.24 = 89,363.08 : x
  2. Step 2: Convert to fraction form
    131,790.88/181,898.24 = 89,363.08/x
  3. Step 3: Cross multiply
    131,790.88x = 181,898.24 × 89,363.08
  4. Step 4: Simplify right side
    131,790.88x = 16,254,985,616.67
  5. Step 5: Solve for x
    x = 16,254,985,616.67/131,790.88
  6. Step 6: Final answer
    x = 123,339.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.