Home / 126,387,002.40-189,580,503.60-103,428,751.20

Finding the Fourth Proportional to 126,387,002.40, 189,580,503.60 and 103,428,751.20

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Solution

The fourth proportional to 126,387,002.40, 189,580,503.60 and 103,428,751.20 is: 155,143,126.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,387,002.40 : 189,580,503.60 = 103,428,751.20 : x
  2. Step 2: Convert to fraction form
    126,387,002.40/189,580,503.60 = 103,428,751.20/x
  3. Step 3: Cross multiply
    126,387,002.40x = 189,580,503.60 × 103,428,751.20
  4. Step 4: Simplify right side
    126,387,002.40x = 19,608,074,739,215,104
  5. Step 5: Solve for x
    x = 19,608,074,739,215,104/126,387,002.40
  6. Step 6: Final answer
    x = 155,143,126.80

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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.