Home / 100,545.20-150,817.80-66,865.40

Finding the Fourth Proportional to 100,545.20, 150,817.80 and 66,865.40

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Solution

The fourth proportional to 100,545.20, 150,817.80 and 66,865.40 is: 100,298.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,545.20 : 150,817.80 = 66,865.40 : x
  2. Step 2: Convert to fraction form
    100,545.20/150,817.80 = 66,865.40/x
  3. Step 3: Cross multiply
    100,545.20x = 150,817.80 × 66,865.40
  4. Step 4: Simplify right side
    100,545.20x = 10,084,492,524.12
  5. Step 5: Solve for x
    x = 10,084,492,524.12/100,545.20
  6. Step 6: Final answer
    x = 100,298.10

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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.