Home / 156,669.50-216,253.12-100,080.88

Finding the Fourth Proportional to 156,669.50, 216,253.12 and 100,080.88

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Solution

The fourth proportional to 156,669.50, 216,253.12 and 100,080.88 is: 138,143.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,669.50 : 216,253.12 = 100,080.88 : x
  2. Step 2: Convert to fraction form
    156,669.50/216,253.12 = 100,080.88/x
  3. Step 3: Cross multiply
    156,669.50x = 216,253.12 × 100,080.88
  4. Step 4: Simplify right side
    156,669.50x = 21,642,802,605.12
  5. Step 5: Solve for x
    x = 21,642,802,605.12/156,669.50
  6. Step 6: Final answer
    x = 138,143.05

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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.