Home / 124,729.62-172,117.89-68,128.98

Finding the Fourth Proportional to 124,729.62, 172,117.89 and 68,128.98

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Solution

The fourth proportional to 124,729.62, 172,117.89 and 68,128.98 is: 94,013.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,729.62 : 172,117.89 = 68,128.98 : x
  2. Step 2: Convert to fraction form
    124,729.62/172,117.89 = 68,128.98/x
  3. Step 3: Cross multiply
    124,729.62x = 172,117.89 × 68,128.98
  4. Step 4: Simplify right side
    124,729.62x = 11,726,216,285.45
  5. Step 5: Solve for x
    x = 11,726,216,285.45/124,729.62
  6. Step 6: Final answer
    x = 94,013.08

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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.