Home / 142,117.64-196,114.68-88,401.12

Finding the Fourth Proportional to 142,117.64, 196,114.68 and 88,401.12

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Solution

The fourth proportional to 142,117.64, 196,114.68 and 88,401.12 is: 121,988.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,117.64 : 196,114.68 = 88,401.12 : x
  2. Step 2: Convert to fraction form
    142,117.64/196,114.68 = 88,401.12/x
  3. Step 3: Cross multiply
    142,117.64x = 196,114.68 × 88,401.12
  4. Step 4: Simplify right side
    142,117.64x = 17,336,757,360.44
  5. Step 5: Solve for x
    x = 17,336,757,360.44/142,117.64
  6. Step 6: Final answer
    x = 121,988.78

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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.