Home / 122,291.28-168,690.46-76,897.40

Finding the Fourth Proportional to 122,291.28, 168,690.46 and 76,897.40

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Solution

The fourth proportional to 122,291.28, 168,690.46 and 76,897.40 is: 106,073.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,291.28 : 168,690.46 = 76,897.40 : x
  2. Step 2: Convert to fraction form
    122,291.28/168,690.46 = 76,897.40/x
  3. Step 3: Cross multiply
    122,291.28x = 168,690.46 × 76,897.40
  4. Step 4: Simplify right side
    122,291.28x = 12,971,857,778.80
  5. Step 5: Solve for x
    x = 12,971,857,778.80/122,291.28
  6. Step 6: Final answer
    x = 106,073.45

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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.