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Finding the Fourth Proportional to 163,312.30, 225,382.10 and 90,723.48

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Solution

The fourth proportional to 163,312.30, 225,382.10 and 90,723.48 is: 125,204.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,312.30 : 225,382.10 = 90,723.48 : x
  2. Step 2: Convert to fraction form
    163,312.30/225,382.10 = 90,723.48/x
  3. Step 3: Cross multiply
    163,312.30x = 225,382.10 × 90,723.48
  4. Step 4: Simplify right side
    163,312.30x = 20,447,447,142.91
  5. Step 5: Solve for x
    x = 20,447,447,142.91/163,312.30
  6. Step 6: Final answer
    x = 125,204.57

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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.