Home / 103,766.10-155,649.15-91,518.90

Finding the Fourth Proportional to 103,766.10, 155,649.15 and 91,518.90

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Solution

The fourth proportional to 103,766.10, 155,649.15 and 91,518.90 is: 137,278.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,766.10 : 155,649.15 = 91,518.90 : x
  2. Step 2: Convert to fraction form
    103,766.10/155,649.15 = 91,518.90/x
  3. Step 3: Cross multiply
    103,766.10x = 155,649.15 × 91,518.90
  4. Step 4: Simplify right side
    103,766.10x = 14,244,838,993.94
  5. Step 5: Solve for x
    x = 14,244,838,993.94/103,766.10
  6. Step 6: Final answer
    x = 137,278.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.