Home / 125,278.16-172,905.96-74,977.04

Finding the Fourth Proportional to 125,278.16, 172,905.96 and 74,977.04

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Solution

The fourth proportional to 125,278.16, 172,905.96 and 74,977.04 is: 103,481.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,278.16 : 172,905.96 = 74,977.04 : x
  2. Step 2: Convert to fraction form
    125,278.16/172,905.96 = 74,977.04/x
  3. Step 3: Cross multiply
    125,278.16x = 172,905.96 × 74,977.04
  4. Step 4: Simplify right side
    125,278.16x = 12,963,977,079.16
  5. Step 5: Solve for x
    x = 12,963,977,079.16/125,278.16
  6. Step 6: Final answer
    x = 103,481.54

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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.