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Finding the Fourth Proportional to 155,216.65, 232,630.29 and 66,365.86

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Solution

The fourth proportional to 155,216.65, 232,630.29 and 66,365.86 is: 99,465.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,216.65 : 232,630.29 = 66,365.86 : x
  2. Step 2: Convert to fraction form
    155,216.65/232,630.29 = 66,365.86/x
  3. Step 3: Cross multiply
    155,216.65x = 232,630.29 × 66,365.86
  4. Step 4: Simplify right side
    155,216.65x = 15,438,709,548.69
  5. Step 5: Solve for x
    x = 15,438,709,548.69/155,216.65
  6. Step 6: Final answer
    x = 99,465.55

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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.