Home / 103,750.20-155,625.30-72,257.40

Finding the Fourth Proportional to 103,750.20, 155,625.30 and 72,257.40

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Solution

The fourth proportional to 103,750.20, 155,625.30 and 72,257.40 is: 108,386.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,750.20 : 155,625.30 = 72,257.40 : x
  2. Step 2: Convert to fraction form
    103,750.20/155,625.30 = 72,257.40/x
  3. Step 3: Cross multiply
    103,750.20x = 155,625.30 × 72,257.40
  4. Step 4: Simplify right side
    103,750.20x = 11,245,079,552.22
  5. Step 5: Solve for x
    x = 11,245,079,552.22/103,750.20
  6. Step 6: Final answer
    x = 108,386.10

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1.5x scale

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.