Home / 97,387.20-145,965.60-72,734.40

Finding the Fourth Proportional to 97,387.20, 145,965.60 and 72,734.40

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Solution

The fourth proportional to 97,387.20, 145,965.60 and 72,734.40 is: 109,015.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,387.20 : 145,965.60 = 72,734.40 : x
  2. Step 2: Convert to fraction form
    97,387.20/145,965.60 = 72,734.40/x
  3. Step 3: Cross multiply
    97,387.20x = 145,965.60 × 72,734.40
  4. Step 4: Simplify right side
    97,387.20x = 10,616,720,336.64
  5. Step 5: Solve for x
    x = 10,616,720,336.64/97,387.20
  6. Step 6: Final answer
    x = 109,015.56

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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.