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Finding the Fourth Proportional to 170,856.60, 256,284.90 and 123,617.40

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Solution

The fourth proportional to 170,856.60, 256,284.90 and 123,617.40 is: 185,426.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,856.60 : 256,284.90 = 123,617.40 : x
  2. Step 2: Convert to fraction form
    170,856.60/256,284.90 = 123,617.40/x
  3. Step 3: Cross multiply
    170,856.60x = 256,284.90 × 123,617.40
  4. Step 4: Simplify right side
    170,856.60x = 31,681,272,997.26
  5. Step 5: Solve for x
    x = 31,681,272,997.26/170,856.60
  6. Step 6: Final answer
    x = 185,426.10

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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.