Home / 156,983.12-216,683.40-89,959.76

Finding the Fourth Proportional to 156,983.12, 216,683.40 and 89,959.76

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Solution

The fourth proportional to 156,983.12, 216,683.40 and 89,959.76 is: 124,171.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,983.12 : 216,683.40 = 89,959.76 : x
  2. Step 2: Convert to fraction form
    156,983.12/216,683.40 = 89,959.76/x
  3. Step 3: Cross multiply
    156,983.12x = 216,683.40 × 89,959.76
  4. Step 4: Simplify right side
    156,983.12x = 19,492,786,659.98
  5. Step 5: Solve for x
    x = 19,492,786,659.98/156,983.12
  6. Step 6: Final answer
    x = 124,171.23

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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.