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Finding the Fourth Proportional to 145,698.39, 218,449.16 and 74,445.93

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Solution

The fourth proportional to 145,698.39, 218,449.16 and 74,445.93 is: 111,618.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,698.39 : 218,449.16 = 74,445.93 : x
  2. Step 2: Convert to fraction form
    145,698.39/218,449.16 = 74,445.93/x
  3. Step 3: Cross multiply
    145,698.39x = 218,449.16 × 74,445.93
  4. Step 4: Simplify right side
    145,698.39x = 16,262,650,873.92
  5. Step 5: Solve for x
    x = 16,262,650,873.92/145,698.39
  6. Step 6: Final answer
    x = 111,618.60

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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.