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Finding the Fourth Proportional to 145,189.95, 200,344.02 and 80,658.87

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Solution

The fourth proportional to 145,189.95, 200,344.02 and 80,658.87 is: 111,299.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,189.95 : 200,344.02 = 80,658.87 : x
  2. Step 2: Convert to fraction form
    145,189.95/200,344.02 = 80,658.87/x
  3. Step 3: Cross multiply
    145,189.95x = 200,344.02 × 80,658.87
  4. Step 4: Simplify right side
    145,189.95x = 16,159,522,264.46
  5. Step 5: Solve for x
    x = 16,159,522,264.46/145,189.95
  6. Step 6: Final answer
    x = 111,299.18

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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.