Home / 156,485.76-215,948.88-84,867.36

Finding the Fourth Proportional to 156,485.76, 215,948.88 and 84,867.36

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Solution

The fourth proportional to 156,485.76, 215,948.88 and 84,867.36 is: 117,116.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,485.76 : 215,948.88 = 84,867.36 : x
  2. Step 2: Convert to fraction form
    156,485.76/215,948.88 = 84,867.36/x
  3. Step 3: Cross multiply
    156,485.76x = 215,948.88 × 84,867.36
  4. Step 4: Simplify right side
    156,485.76x = 18,327,011,340.56
  5. Step 5: Solve for x
    x = 18,327,011,340.56/156,485.76
  6. Step 6: Final answer
    x = 117,116.16

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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.