Home / 122,143.59-168,565.05-68,445.90

Finding the Fourth Proportional to 122,143.59, 168,565.05 and 68,445.90

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Solution

The fourth proportional to 122,143.59, 168,565.05 and 68,445.90 is: 94,459.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,143.59 : 168,565.05 = 68,445.90 : x
  2. Step 2: Convert to fraction form
    122,143.59/168,565.05 = 68,445.90/x
  3. Step 3: Cross multiply
    122,143.59x = 168,565.05 × 68,445.90
  4. Step 4: Simplify right side
    122,143.59x = 11,537,586,555.80
  5. Step 5: Solve for x
    x = 11,537,586,555.80/122,143.59
  6. Step 6: Final answer
    x = 94,459.21

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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.