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Finding the Fourth Proportional to 115,148.61, 172,722.92 and 44,978.72

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Solution

The fourth proportional to 115,148.61, 172,722.92 and 44,978.72 is: 67,468.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,148.61 : 172,722.92 = 44,978.72 : x
  2. Step 2: Convert to fraction form
    115,148.61/172,722.92 = 44,978.72/x
  3. Step 3: Cross multiply
    115,148.61x = 172,722.92 × 44,978.72
  4. Step 4: Simplify right side
    115,148.61x = 7,768,855,752.81
  5. Step 5: Solve for x
    x = 7,768,855,752.81/115,148.61
  6. Step 6: Final answer
    x = 67,468.08

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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.