Home / 122,869.88-169,514.12-71,866.34

Finding the Fourth Proportional to 122,869.88, 169,514.12 and 71,866.34

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Solution

The fourth proportional to 122,869.88, 169,514.12 and 71,866.34 is: 99,148.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,869.88 : 169,514.12 = 71,866.34 : x
  2. Step 2: Convert to fraction form
    122,869.88/169,514.12 = 71,866.34/x
  3. Step 3: Cross multiply
    122,869.88x = 169,514.12 × 71,866.34
  4. Step 4: Simplify right side
    122,869.88x = 12,182,358,175.82
  5. Step 5: Solve for x
    x = 12,182,358,175.82/122,869.88
  6. Step 6: Final answer
    x = 99,148.45

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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.