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Finding the Fourth Proportional to 178,062.93, 245,763.18 and 120,720.69

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Solution

The fourth proportional to 178,062.93, 245,763.18 and 120,720.69 is: 166,619.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,062.93 : 245,763.18 = 120,720.69 : x
  2. Step 2: Convert to fraction form
    178,062.93/245,763.18 = 120,720.69/x
  3. Step 3: Cross multiply
    178,062.93x = 245,763.18 × 120,720.69
  4. Step 4: Simplify right side
    178,062.93x = 29,668,700,890.52
  5. Step 5: Solve for x
    x = 29,668,700,890.52/178,062.93
  6. Step 6: Final answer
    x = 166,619.19

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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.