Home / 102,637.87-153,959.13-81,592.45

Finding the Fourth Proportional to 102,637.87, 153,959.13 and 81,592.45

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Solution

The fourth proportional to 102,637.87, 153,959.13 and 81,592.45 is: 122,390.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,637.87 : 153,959.13 = 81,592.45 : x
  2. Step 2: Convert to fraction form
    102,637.87/153,959.13 = 81,592.45/x
  3. Step 3: Cross multiply
    102,637.87x = 153,959.13 × 81,592.45
  4. Step 4: Simplify right side
    102,637.87x = 12,561,902,231.67
  5. Step 5: Solve for x
    x = 12,561,902,231.67/102,637.87
  6. Step 6: Final answer
    x = 122,390.52

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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.