Home / 156,981.50-216,654.09-89,913.50

Finding the Fourth Proportional to 156,981.50, 216,654.09 and 89,913.50

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Solution

The fourth proportional to 156,981.50, 216,654.09 and 89,913.50 is: 124,091.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,981.50 : 216,654.09 = 89,913.50 : x
  2. Step 2: Convert to fraction form
    156,981.50/216,654.09 = 89,913.50/x
  3. Step 3: Cross multiply
    156,981.50x = 216,654.09 × 89,913.50
  4. Step 4: Simplify right side
    156,981.50x = 19,480,127,521.22
  5. Step 5: Solve for x
    x = 19,480,127,521.22/156,981.50
  6. Step 6: Final answer
    x = 124,091.87

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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.