Home / 122,454.68-168,995.01-81,548.66

Finding the Fourth Proportional to 122,454.68, 168,995.01 and 81,548.66

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Solution

The fourth proportional to 122,454.68, 168,995.01 and 81,548.66 is: 112,542.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,454.68 : 168,995.01 = 81,548.66 : x
  2. Step 2: Convert to fraction form
    122,454.68/168,995.01 = 81,548.66/x
  3. Step 3: Cross multiply
    122,454.68x = 168,995.01 × 81,548.66
  4. Step 4: Simplify right side
    122,454.68x = 13,781,316,612.19
  5. Step 5: Solve for x
    x = 13,781,316,612.19/122,454.68
  6. Step 6: Final answer
    x = 112,542.18

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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.