Home / 120,319.52-166,116.24-77,316.35

Finding the Fourth Proportional to 120,319.52, 166,116.24 and 77,316.35

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Solution

The fourth proportional to 120,319.52, 166,116.24 and 77,316.35 is: 106,744.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,319.52 : 166,116.24 = 77,316.35 : x
  2. Step 2: Convert to fraction form
    120,319.52/166,116.24 = 77,316.35/x
  3. Step 3: Cross multiply
    120,319.52x = 166,116.24 × 77,316.35
  4. Step 4: Simplify right side
    120,319.52x = 12,843,500,521.94
  5. Step 5: Solve for x
    x = 12,843,500,521.94/120,319.52
  6. Step 6: Final answer
    x = 106,744.95

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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.