Home / 124,729.34-172,126.50-68,140.72

Finding the Fourth Proportional to 124,729.34, 172,126.50 and 68,140.72

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Solution

The fourth proportional to 124,729.34, 172,126.50 and 68,140.72 is: 94,034.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,729.34 : 172,126.50 = 68,140.72 : x
  2. Step 2: Convert to fraction form
    124,729.34/172,126.50 = 68,140.72/x
  3. Step 3: Cross multiply
    124,729.34x = 172,126.50 × 68,140.72
  4. Step 4: Simplify right side
    124,729.34x = 11,728,823,641.08
  5. Step 5: Solve for x
    x = 11,728,823,641.08/124,729.34
  6. Step 6: Final answer
    x = 94,034.20

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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.