Home / 123,528.12-170,468.79-66,939.50

Finding the Fourth Proportional to 123,528.12, 170,468.79 and 66,939.50

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Solution

The fourth proportional to 123,528.12, 170,468.79 and 66,939.50 is: 92,376.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,528.12 : 170,468.79 = 66,939.50 : x
  2. Step 2: Convert to fraction form
    123,528.12/170,468.79 = 66,939.50/x
  3. Step 3: Cross multiply
    123,528.12x = 170,468.79 × 66,939.50
  4. Step 4: Simplify right side
    123,528.12x = 11,411,094,715.86
  5. Step 5: Solve for x
    x = 11,411,094,715.86/123,528.12
  6. Step 6: Final answer
    x = 92,376.49

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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.