Home / 125,153.64-172,728.45-71,426.34

Finding the Fourth Proportional to 125,153.64, 172,728.45 and 71,426.34

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Solution

The fourth proportional to 125,153.64, 172,728.45 and 71,426.34 is: 98,577.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,153.64 : 172,728.45 = 71,426.34 : x
  2. Step 2: Convert to fraction form
    125,153.64/172,728.45 = 71,426.34/x
  3. Step 3: Cross multiply
    125,153.64x = 172,728.45 × 71,426.34
  4. Step 4: Simplify right side
    125,153.64x = 12,337,360,997.37
  5. Step 5: Solve for x
    x = 12,337,360,997.37/125,153.64
  6. Step 6: Final answer
    x = 98,577.72

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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.