Home / 156,154.31-215,493.65-84,534.33

Finding the Fourth Proportional to 156,154.31, 215,493.65 and 84,534.33

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Solution

The fourth proportional to 156,154.31, 215,493.65 and 84,534.33 is: 116,657.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,154.31 : 215,493.65 = 84,534.33 : x
  2. Step 2: Convert to fraction form
    156,154.31/215,493.65 = 84,534.33/x
  3. Step 3: Cross multiply
    156,154.31x = 215,493.65 × 84,534.33
  4. Step 4: Simplify right side
    156,154.31x = 18,216,610,899.33
  5. Step 5: Solve for x
    x = 18,216,610,899.33/156,154.31
  6. Step 6: Final answer
    x = 116,657.75

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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.