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Finding the Fourth Proportional to 100,352,001.60, 150,863,925.60 and 85,571,380.80

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Solution

The fourth proportional to 100,352,001.60, 150,863,925.60 and 85,571,380.80 is: 128,643,517.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,352,001.60 : 150,863,925.60 = 85,571,380.80 : x
  2. Step 2: Convert to fraction form
    100,352,001.60/150,863,925.60 = 85,571,380.80/x
  3. Step 3: Cross multiply
    100,352,001.60x = 150,863,925.60 × 85,571,380.80
  4. Step 4: Simplify right side
    100,352,001.60x = 12,909,634,426,500,468
  5. Step 5: Solve for x
    x = 12,909,634,426,500,468/100,352,001.60
  6. Step 6: Final answer
    x = 128,643,517.03

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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.