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Finding the Fourth Proportional to 124,291.68, 171,522.72 and 67,703.28

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Solution

The fourth proportional to 124,291.68, 171,522.72 and 67,703.28 is: 93,430.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,291.68 : 171,522.72 = 67,703.28 : x
  2. Step 2: Convert to fraction form
    124,291.68/171,522.72 = 67,703.28/x
  3. Step 3: Cross multiply
    124,291.68x = 171,522.72 × 67,703.28
  4. Step 4: Simplify right side
    124,291.68x = 11,612,650,738.52
  5. Step 5: Solve for x
    x = 11,612,650,738.52/124,291.68
  6. Step 6: Final answer
    x = 93,430.64

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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.