Home / 129,218.31-193,825.03-70,428.10

Finding the Fourth Proportional to 129,218.31, 193,825.03 and 70,428.10

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Solution

The fourth proportional to 129,218.31, 193,825.03 and 70,428.10 is: 105,640.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,218.31 : 193,825.03 = 70,428.10 : x
  2. Step 2: Convert to fraction form
    129,218.31/193,825.03 = 70,428.10/x
  3. Step 3: Cross multiply
    129,218.31x = 193,825.03 × 70,428.10
  4. Step 4: Simplify right side
    129,218.31x = 13,650,728,243.20
  5. Step 5: Solve for x
    x = 13,650,728,243.20/129,218.31
  6. Step 6: Final answer
    x = 105,640.82

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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.