Home / 112,715.90-169,010.51-77,217.24

Finding the Fourth Proportional to 112,715.90, 169,010.51 and 77,217.24

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Solution

The fourth proportional to 112,715.90, 169,010.51 and 77,217.24 is: 115,782.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,715.90 : 169,010.51 = 77,217.24 : x
  2. Step 2: Convert to fraction form
    112,715.90/169,010.51 = 77,217.24/x
  3. Step 3: Cross multiply
    112,715.90x = 169,010.51 × 77,217.24
  4. Step 4: Simplify right side
    112,715.90x = 13,050,524,727.11
  5. Step 5: Solve for x
    x = 13,050,524,727.11/112,715.90
  6. Step 6: Final answer
    x = 115,782.47

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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.