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Finding the Fourth Proportional to 124,820.80, 187,231.20 and 75,054.40

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Solution

The fourth proportional to 124,820.80, 187,231.20 and 75,054.40 is: 112,581.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,820.80 : 187,231.20 = 75,054.40 : x
  2. Step 2: Convert to fraction form
    124,820.80/187,231.20 = 75,054.40/x
  3. Step 3: Cross multiply
    124,820.80x = 187,231.20 × 75,054.40
  4. Step 4: Simplify right side
    124,820.80x = 14,052,525,377.28
  5. Step 5: Solve for x
    x = 14,052,525,377.28/124,820.80
  6. Step 6: Final answer
    x = 112,581.60

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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.