Home / 99,850,147.20-149,775,220.80-81,710,294.40

Finding the Fourth Proportional to 99,850,147.20, 149,775,220.80 and 81,710,294.40

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Solution

The fourth proportional to 99,850,147.20, 149,775,220.80 and 81,710,294.40 is: 122,565,441.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,850,147.20 : 149,775,220.80 = 81,710,294.40 : x
  2. Step 2: Convert to fraction form
    99,850,147.20/149,775,220.80 = 81,710,294.40/x
  3. Step 3: Cross multiply
    99,850,147.20x = 149,775,220.80 × 81,710,294.40
  4. Step 4: Simplify right side
    99,850,147.20x = 12,238,177,385,393,006
  5. Step 5: Solve for x
    x = 12,238,177,385,393,006/99,850,147.20
  6. Step 6: Final answer
    x = 122,565,441.60

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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.