Home / 112,943.16-169,469.28-79,875.72

Finding the Fourth Proportional to 112,943.16, 169,469.28 and 79,875.72

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Solution

The fourth proportional to 112,943.16, 169,469.28 and 79,875.72 is: 119,852.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,943.16 : 169,469.28 = 79,875.72 : x
  2. Step 2: Convert to fraction form
    112,943.16/169,469.28 = 79,875.72/x
  3. Step 3: Cross multiply
    112,943.16x = 169,469.28 × 79,875.72
  4. Step 4: Simplify right side
    112,943.16x = 13,536,480,757.88
  5. Step 5: Solve for x
    x = 13,536,480,757.88/112,943.16
  6. Step 6: Final answer
    x = 119,852.15

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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.