Home / 156,749.33-216,314.02-85,129.37

Finding the Fourth Proportional to 156,749.33, 216,314.02 and 85,129.37

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Solution

The fourth proportional to 156,749.33, 216,314.02 and 85,129.37 is: 117,478.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,749.33 : 216,314.02 = 85,129.37 : x
  2. Step 2: Convert to fraction form
    156,749.33/216,314.02 = 85,129.37/x
  3. Step 3: Cross multiply
    156,749.33x = 216,314.02 × 85,129.37
  4. Step 4: Simplify right side
    156,749.33x = 18,414,676,244.77
  5. Step 5: Solve for x
    x = 18,414,676,244.77/156,749.33
  6. Step 6: Final answer
    x = 117,478.50

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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.