Home / 103,432.90-155,149.35-36,875.20

Finding the Fourth Proportional to 103,432.90, 155,149.35 and 36,875.20

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Solution

The fourth proportional to 103,432.90, 155,149.35 and 36,875.20 is: 55,312.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,432.90 : 155,149.35 = 36,875.20 : x
  2. Step 2: Convert to fraction form
    103,432.90/155,149.35 = 36,875.20/x
  3. Step 3: Cross multiply
    103,432.90x = 155,149.35 × 36,875.20
  4. Step 4: Simplify right side
    103,432.90x = 5,721,163,311.12
  5. Step 5: Solve for x
    x = 5,721,163,311.12/103,432.90
  6. Step 6: Final answer
    x = 55,312.80

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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.