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Finding the Fourth Proportional to 103,381.88, 142,656.32 and 58,064.80

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Solution

The fourth proportional to 103,381.88, 142,656.32 and 58,064.80 is: 80,123.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,381.88 : 142,656.32 = 58,064.80 : x
  2. Step 2: Convert to fraction form
    103,381.88/142,656.32 = 58,064.80/x
  3. Step 3: Cross multiply
    103,381.88x = 142,656.32 × 58,064.80
  4. Step 4: Simplify right side
    103,381.88x = 8,283,310,689.54
  5. Step 5: Solve for x
    x = 8,283,310,689.54/103,381.88
  6. Step 6: Final answer
    x = 80,123.43

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1.5x scale

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.