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Finding the Fourth Proportional to 181,611.80, 272,417.70 and 115,345.70

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Solution

The fourth proportional to 181,611.80, 272,417.70 and 115,345.70 is: 173,018.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,611.80 : 272,417.70 = 115,345.70 : x
  2. Step 2: Convert to fraction form
    181,611.80/272,417.70 = 115,345.70/x
  3. Step 3: Cross multiply
    181,611.80x = 272,417.70 × 115,345.70
  4. Step 4: Simplify right side
    181,611.80x = 31,422,210,298.89
  5. Step 5: Solve for x
    x = 31,422,210,298.89/181,611.80
  6. Step 6: Final answer
    x = 173,018.55

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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.