Home / 123,768,331.20-185,850,784.80-98,420,126.40

Finding the Fourth Proportional to 123,768,331.20, 185,850,784.80 and 98,420,126.40

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Solution

The fourth proportional to 123,768,331.20, 185,850,784.80 and 98,420,126.40 is: 147,787,867.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,768,331.20 : 185,850,784.80 = 98,420,126.40 : x
  2. Step 2: Convert to fraction form
    123,768,331.20/185,850,784.80 = 98,420,126.40/x
  3. Step 3: Cross multiply
    123,768,331.20x = 185,850,784.80 × 98,420,126.40
  4. Step 4: Simplify right side
    123,768,331.20x = 18,291,457,731,555,200
  5. Step 5: Solve for x
    x = 18,291,457,731,555,200/123,768,331.20
  6. Step 6: Final answer
    x = 147,787,867.50

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1.5x scale

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.