Home / 103,407.12-142,701.31-58,085.80

Finding the Fourth Proportional to 103,407.12, 142,701.31 and 58,085.80

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Solution

The fourth proportional to 103,407.12, 142,701.31 and 58,085.80 is: 80,158.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,407.12 : 142,701.31 = 58,085.80 : x
  2. Step 2: Convert to fraction form
    103,407.12/142,701.31 = 58,085.80/x
  3. Step 3: Cross multiply
    103,407.12x = 142,701.31 × 58,085.80
  4. Step 4: Simplify right side
    103,407.12x = 8,288,919,752.40
  5. Step 5: Solve for x
    x = 8,288,919,752.40/103,407.12
  6. Step 6: Final answer
    x = 80,158.11

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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.