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Finding the Fourth Proportional to 181,707.60, 272,561.40 and 115,222.80

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Solution

The fourth proportional to 181,707.60, 272,561.40 and 115,222.80 is: 172,834.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,707.60 : 272,561.40 = 115,222.80 : x
  2. Step 2: Convert to fraction form
    181,707.60/272,561.40 = 115,222.80/x
  3. Step 3: Cross multiply
    181,707.60x = 272,561.40 × 115,222.80
  4. Step 4: Simplify right side
    181,707.60x = 31,405,287,679.92
  5. Step 5: Solve for x
    x = 31,405,287,679.92/181,707.60
  6. Step 6: Final answer
    x = 172,834.20

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1.5x scale

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.