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Finding the Fourth Proportional to 239,720.16, 359,580.32 and 81,950.08

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Solution

The fourth proportional to 239,720.16, 359,580.32 and 81,950.08 is: 122,925.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,720.16 : 359,580.32 = 81,950.08 : x
  2. Step 2: Convert to fraction form
    239,720.16/359,580.32 = 81,950.08/x
  3. Step 3: Cross multiply
    239,720.16x = 359,580.32 × 81,950.08
  4. Step 4: Simplify right side
    239,720.16x = 29,467,635,990.43
  5. Step 5: Solve for x
    x = 29,467,635,990.43/239,720.16
  6. Step 6: Final answer
    x = 122,925.15

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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.