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Finding the Fourth Proportional to 121,103.60, 181,525.80 and 54,532.40

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Solution

The fourth proportional to 121,103.60, 181,525.80 and 54,532.40 is: 81,740.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,103.60 : 181,525.80 = 54,532.40 : x
  2. Step 2: Convert to fraction form
    121,103.60/181,525.80 = 54,532.40/x
  3. Step 3: Cross multiply
    121,103.60x = 181,525.80 × 54,532.40
  4. Step 4: Simplify right side
    121,103.60x = 9,899,037,535.92
  5. Step 5: Solve for x
    x = 9,899,037,535.92/121,103.60
  6. Step 6: Final answer
    x = 81,740.24

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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.