Home / 156,749.30-216,348.48-103,039.28

Finding the Fourth Proportional to 156,749.30, 216,348.48 and 103,039.28

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Solution

The fourth proportional to 156,749.30, 216,348.48 and 103,039.28 is: 142,216.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,749.30 : 216,348.48 = 103,039.28 : x
  2. Step 2: Convert to fraction form
    156,749.30/216,348.48 = 103,039.28/x
  3. Step 3: Cross multiply
    156,749.30x = 216,348.48 × 103,039.28
  4. Step 4: Simplify right side
    156,749.30x = 22,292,391,608.29
  5. Step 5: Solve for x
    x = 22,292,391,608.29/156,749.30
  6. Step 6: Final answer
    x = 142,216.85

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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.