Home / 156,969.12-216,664.08-89,945.76

Finding the Fourth Proportional to 156,969.12, 216,664.08 and 89,945.76

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Solution

The fourth proportional to 156,969.12, 216,664.08 and 89,945.76 is: 124,151.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,969.12 : 216,664.08 = 89,945.76 : x
  2. Step 2: Convert to fraction form
    156,969.12/216,664.08 = 89,945.76/x
  3. Step 3: Cross multiply
    156,969.12x = 216,664.08 × 89,945.76
  4. Step 4: Simplify right side
    156,969.12x = 19,488,015,340.30
  5. Step 5: Solve for x
    x = 19,488,015,340.30/156,969.12
  6. Step 6: Final answer
    x = 124,151.91

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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.