Home / 103,742.80-155,614.20-99,192.40

Finding the Fourth Proportional to 103,742.80, 155,614.20 and 99,192.40

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Solution

The fourth proportional to 103,742.80, 155,614.20 and 99,192.40 is: 148,788.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,742.80 : 155,614.20 = 99,192.40 : x
  2. Step 2: Convert to fraction form
    103,742.80/155,614.20 = 99,192.40/x
  3. Step 3: Cross multiply
    103,742.80x = 155,614.20 × 99,192.40
  4. Step 4: Simplify right side
    103,742.80x = 15,435,745,972.08
  5. Step 5: Solve for x
    x = 15,435,745,972.08/103,742.80
  6. Step 6: Final answer
    x = 148,788.60

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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.