Home / 124,972.74-172,282.95-89,100.45

Finding the Fourth Proportional to 124,972.74, 172,282.95 and 89,100.45

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Solution

The fourth proportional to 124,972.74, 172,282.95 and 89,100.45 is: 122,830.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,972.74 : 172,282.95 = 89,100.45 : x
  2. Step 2: Convert to fraction form
    124,972.74/172,282.95 = 89,100.45/x
  3. Step 3: Cross multiply
    124,972.74x = 172,282.95 × 89,100.45
  4. Step 4: Simplify right side
    124,972.74x = 15,350,488,372.33
  5. Step 5: Solve for x
    x = 15,350,488,372.33/124,972.74
  6. Step 6: Final answer
    x = 122,830.69

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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.