Home / 102,225.40-153,338.10-85,895.80

Finding the Fourth Proportional to 102,225.40, 153,338.10 and 85,895.80

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Solution

The fourth proportional to 102,225.40, 153,338.10 and 85,895.80 is: 128,843.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,225.40 : 153,338.10 = 85,895.80 : x
  2. Step 2: Convert to fraction form
    102,225.40/153,338.10 = 85,895.80/x
  3. Step 3: Cross multiply
    102,225.40x = 153,338.10 × 85,895.80
  4. Step 4: Simplify right side
    102,225.40x = 13,171,098,769.98
  5. Step 5: Solve for x
    x = 13,171,098,769.98/102,225.40
  6. Step 6: Final answer
    x = 128,843.70

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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.