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Finding the Fourth Proportional to 158,661,169.68, 218,973,779.72 and 89,050,358.64

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Solution

The fourth proportional to 158,661,169.68, 218,973,779.72 and 89,050,358.64 is: 122,901,486.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,661,169.68 : 218,973,779.72 = 89,050,358.64 : x
  2. Step 2: Convert to fraction form
    158,661,169.68/218,973,779.72 = 89,050,358.64/x
  3. Step 3: Cross multiply
    158,661,169.68x = 218,973,779.72 × 89,050,358.64
  4. Step 4: Simplify right side
    158,661,169.68x = 19,499,693,616,822,360
  5. Step 5: Solve for x
    x = 19,499,693,616,822,360/158,661,169.68
  6. Step 6: Final answer
    x = 122,901,486.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.