Home / 103,489.98-142,820.19-58,168.86

Finding the Fourth Proportional to 103,489.98, 142,820.19 and 58,168.86

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Solution

The fourth proportional to 103,489.98, 142,820.19 and 58,168.86 is: 80,275.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,489.98 : 142,820.19 = 58,168.86 : x
  2. Step 2: Convert to fraction form
    103,489.98/142,820.19 = 58,168.86/x
  3. Step 3: Cross multiply
    103,489.98x = 142,820.19 × 58,168.86
  4. Step 4: Simplify right side
    103,489.98x = 8,307,687,637.28
  5. Step 5: Solve for x
    x = 8,307,687,637.28/103,489.98
  6. Step 6: Final answer
    x = 80,275.28

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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.