Home / 120,663.15-166,539.38-69,684.18

Finding the Fourth Proportional to 120,663.15, 166,539.38 and 69,684.18

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Solution

The fourth proportional to 120,663.15, 166,539.38 and 69,684.18 is: 96,178.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,663.15 : 166,539.38 = 69,684.18 : x
  2. Step 2: Convert to fraction form
    120,663.15/166,539.38 = 69,684.18/x
  3. Step 3: Cross multiply
    120,663.15x = 166,539.38 × 69,684.18
  4. Step 4: Simplify right side
    120,663.15x = 11,605,159,784.59
  5. Step 5: Solve for x
    x = 11,605,159,784.59/120,663.15
  6. Step 6: Final answer
    x = 96,178.16

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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.