Home / 156,981.28-216,681.60-106,709.44

Finding the Fourth Proportional to 156,981.28, 216,681.60 and 106,709.44

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Solution

The fourth proportional to 156,981.28, 216,681.60 and 106,709.44 is: 147,291.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,981.28 : 216,681.60 = 106,709.44 : x
  2. Step 2: Convert to fraction form
    156,981.28/216,681.60 = 106,709.44/x
  3. Step 3: Cross multiply
    156,981.28x = 216,681.60 × 106,709.44
  4. Step 4: Simplify right side
    156,981.28x = 23,121,972,194.30
  5. Step 5: Solve for x
    x = 23,121,972,194.30/156,981.28
  6. Step 6: Final answer
    x = 147,291.27

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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.