Home / 115,420.24-159,282.62-72,401.55

Finding the Fourth Proportional to 115,420.24, 159,282.62 and 72,401.55

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Solution

The fourth proportional to 115,420.24, 159,282.62 and 72,401.55 is: 99,915.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,420.24 : 159,282.62 = 72,401.55 : x
  2. Step 2: Convert to fraction form
    115,420.24/159,282.62 = 72,401.55/x
  3. Step 3: Cross multiply
    115,420.24x = 159,282.62 × 72,401.55
  4. Step 4: Simplify right side
    115,420.24x = 11,532,308,576.06
  5. Step 5: Solve for x
    x = 11,532,308,576.06/115,420.24
  6. Step 6: Final answer
    x = 99,915.83

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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.