Home / 138,095.10-207,142.65-76,159.26

Finding the Fourth Proportional to 138,095.10, 207,142.65 and 76,159.26

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Solution

The fourth proportional to 138,095.10, 207,142.65 and 76,159.26 is: 114,238.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,095.10 : 207,142.65 = 76,159.26 : x
  2. Step 2: Convert to fraction form
    138,095.10/207,142.65 = 76,159.26/x
  3. Step 3: Cross multiply
    138,095.10x = 207,142.65 × 76,159.26
  4. Step 4: Simplify right side
    138,095.10x = 15,775,830,938.44
  5. Step 5: Solve for x
    x = 15,775,830,938.44/138,095.10
  6. Step 6: Final answer
    x = 114,238.89

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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.