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Finding the Fourth Proportional to 151,542.95, 209,088.24 and 86,130.86

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Solution

The fourth proportional to 151,542.95, 209,088.24 and 86,130.86 is: 118,837.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,542.95 : 209,088.24 = 86,130.86 : x
  2. Step 2: Convert to fraction form
    151,542.95/209,088.24 = 86,130.86/x
  3. Step 3: Cross multiply
    151,542.95x = 209,088.24 × 86,130.86
  4. Step 4: Simplify right side
    151,542.95x = 18,008,948,881.65
  5. Step 5: Solve for x
    x = 18,008,948,881.65/151,542.95
  6. Step 6: Final answer
    x = 118,837.26

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