Home / 100,352,002.60-150,863,927.10-85,571,381.80

Finding the Fourth Proportional to 100,352,002.60, 150,863,927.10 and 85,571,381.80

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Solution

The fourth proportional to 100,352,002.60, 150,863,927.10 and 85,571,381.80 is: 128,643,518.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,352,002.60 : 150,863,927.10 = 85,571,381.80 : x
  2. Step 2: Convert to fraction form
    100,352,002.60/150,863,927.10 = 85,571,381.80/x
  3. Step 3: Cross multiply
    100,352,002.60x = 150,863,927.10 × 85,571,381.80
  4. Step 4: Simplify right side
    100,352,002.60x = 12,909,634,705,721,466
  5. Step 5: Solve for x
    x = 12,909,634,705,721,466/100,352,002.60
  6. Step 6: Final answer
    x = 128,643,518.53

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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.