Home / 122,976.10-169,719.15-71,985.76

Finding the Fourth Proportional to 122,976.10, 169,719.15 and 71,985.76

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Solution

The fourth proportional to 122,976.10, 169,719.15 and 71,985.76 is: 99,347.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,976.10 : 169,719.15 = 71,985.76 : x
  2. Step 2: Convert to fraction form
    122,976.10/169,719.15 = 71,985.76/x
  3. Step 3: Cross multiply
    122,976.10x = 169,719.15 × 71,985.76
  4. Step 4: Simplify right side
    122,976.10x = 12,217,361,999.30
  5. Step 5: Solve for x
    x = 12,217,361,999.30/122,976.10
  6. Step 6: Final answer
    x = 99,347.45

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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.