Home / 118,098,412.80-177,147,619.20-72,512,390.40

Finding the Fourth Proportional to 118,098,412.80, 177,147,619.20 and 72,512,390.40

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Solution

The fourth proportional to 118,098,412.80, 177,147,619.20 and 72,512,390.40 is: 108,768,585.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,098,412.80 : 177,147,619.20 = 72,512,390.40 : x
  2. Step 2: Convert to fraction form
    118,098,412.80/177,147,619.20 = 72,512,390.40/x
  3. Step 3: Cross multiply
    118,098,412.80x = 177,147,619.20 × 72,512,390.40
  4. Step 4: Simplify right side
    118,098,412.80x = 12,845,397,321,860,936
  5. Step 5: Solve for x
    x = 12,845,397,321,860,936/118,098,412.80
  6. Step 6: Final answer
    x = 108,768,585.60

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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.