Home / 125,577.40-188,366.10-81,254.20

Finding the Fourth Proportional to 125,577.40, 188,366.10 and 81,254.20

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Solution

The fourth proportional to 125,577.40, 188,366.10 and 81,254.20 is: 121,881.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,577.40 : 188,366.10 = 81,254.20 : x
  2. Step 2: Convert to fraction form
    125,577.40/188,366.10 = 81,254.20/x
  3. Step 3: Cross multiply
    125,577.40x = 188,366.10 × 81,254.20
  4. Step 4: Simplify right side
    125,577.40x = 15,305,536,762.62
  5. Step 5: Solve for x
    x = 15,305,536,762.62/125,577.40
  6. Step 6: Final answer
    x = 121,881.30

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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.