Home / 156,740.38-235,121.73-77,775.10

Finding the Fourth Proportional to 156,740.38, 235,121.73 and 77,775.10

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Solution

The fourth proportional to 156,740.38, 235,121.73 and 77,775.10 is: 116,668.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,740.38 : 235,121.73 = 77,775.10 : x
  2. Step 2: Convert to fraction form
    156,740.38/235,121.73 = 77,775.10/x
  3. Step 3: Cross multiply
    156,740.38x = 235,121.73 × 77,775.10
  4. Step 4: Simplify right side
    156,740.38x = 18,286,616,062.92
  5. Step 5: Solve for x
    x = 18,286,616,062.92/156,740.38
  6. Step 6: Final answer
    x = 116,668.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.