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Finding the Fourth Proportional to 109,482.68, 151,114.56 and 71,346.80

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Solution

The fourth proportional to 109,482.68, 151,114.56 and 71,346.80 is: 98,477.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,482.68 : 151,114.56 = 71,346.80 : x
  2. Step 2: Convert to fraction form
    109,482.68/151,114.56 = 71,346.80/x
  3. Step 3: Cross multiply
    109,482.68x = 151,114.56 × 71,346.80
  4. Step 4: Simplify right side
    109,482.68x = 10,781,540,289.41
  5. Step 5: Solve for x
    x = 10,781,540,289.41/109,482.68
  6. Step 6: Final answer
    x = 98,477.13

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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.