Home / 156,939.76-216,576.21-85,320.10

Finding the Fourth Proportional to 156,939.76, 216,576.21 and 85,320.10

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Solution

The fourth proportional to 156,939.76, 216,576.21 and 85,320.10 is: 117,741.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,939.76 : 216,576.21 = 85,320.10 : x
  2. Step 2: Convert to fraction form
    156,939.76/216,576.21 = 85,320.10/x
  3. Step 3: Cross multiply
    156,939.76x = 216,576.21 × 85,320.10
  4. Step 4: Simplify right side
    156,939.76x = 18,478,303,894.82
  5. Step 5: Solve for x
    x = 18,478,303,894.82/156,939.76
  6. Step 6: Final answer
    x = 117,741.38

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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.