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Finding the Fourth Proportional to 157,651.18, 217,565.72 and 88,764.36

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Solution

The fourth proportional to 157,651.18, 217,565.72 and 88,764.36 is: 122,498.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,651.18 : 217,565.72 = 88,764.36 : x
  2. Step 2: Convert to fraction form
    157,651.18/217,565.72 = 88,764.36/x
  3. Step 3: Cross multiply
    157,651.18x = 217,565.72 × 88,764.36
  4. Step 4: Simplify right side
    157,651.18x = 19,312,081,893.74
  5. Step 5: Solve for x
    x = 19,312,081,893.74/157,651.18
  6. Step 6: Final answer
    x = 122,498.81

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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.