Home / 89,412.42-123,343.65-68,154.78

Finding the Fourth Proportional to 89,412.42, 123,343.65 and 68,154.78

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Solution

The fourth proportional to 89,412.42, 123,343.65 and 68,154.78 is: 94,018.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,412.42 : 123,343.65 = 68,154.78 : x
  2. Step 2: Convert to fraction form
    89,412.42/123,343.65 = 68,154.78/x
  3. Step 3: Cross multiply
    89,412.42x = 123,343.65 × 68,154.78
  4. Step 4: Simplify right side
    89,412.42x = 8,406,459,330.15
  5. Step 5: Solve for x
    x = 8,406,459,330.15/89,412.42
  6. Step 6: Final answer
    x = 94,018.92

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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.