Home / 112,385.10-155,184.75-74,829.90

Finding the Fourth Proportional to 112,385.10, 155,184.75 and 74,829.90

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Solution

The fourth proportional to 112,385.10, 155,184.75 and 74,829.90 is: 103,327.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,385.10 : 155,184.75 = 74,829.90 : x
  2. Step 2: Convert to fraction form
    112,385.10/155,184.75 = 74,829.90/x
  3. Step 3: Cross multiply
    112,385.10x = 155,184.75 × 74,829.90
  4. Step 4: Simplify right side
    112,385.10x = 11,612,459,324.03
  5. Step 5: Solve for x
    x = 11,612,459,324.03/112,385.10
  6. Step 6: Final answer
    x = 103,327.39

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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.