Home / 124,042.40-171,258.84-78,168.20

Finding the Fourth Proportional to 124,042.40, 171,258.84 and 78,168.20

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Solution

The fourth proportional to 124,042.40, 171,258.84 and 78,168.20 is: 107,922.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,042.40 : 171,258.84 = 78,168.20 : x
  2. Step 2: Convert to fraction form
    124,042.40/171,258.84 = 78,168.20/x
  3. Step 3: Cross multiply
    124,042.40x = 171,258.84 × 78,168.20
  4. Step 4: Simplify right side
    124,042.40x = 13,386,995,256.89
  5. Step 5: Solve for x
    x = 13,386,995,256.89/124,042.40
  6. Step 6: Final answer
    x = 107,922.74

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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.