Home / 103,343,755.40-155,015,633.10-68,906,378.60

Finding the Fourth Proportional to 103,343,755.40, 155,015,633.10 and 68,906,378.60

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Solution

The fourth proportional to 103,343,755.40, 155,015,633.10 and 68,906,378.60 is: 103,359,567.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,343,755.40 : 155,015,633.10 = 68,906,378.60 : x
  2. Step 2: Convert to fraction form
    103,343,755.40/155,015,633.10 = 68,906,378.60/x
  3. Step 3: Cross multiply
    103,343,755.40x = 155,015,633.10 × 68,906,378.60
  4. Step 4: Simplify right side
    103,343,755.40x = 10,681,565,903,307,290
  5. Step 5: Solve for x
    x = 10,681,565,903,307,290/103,343,755.40
  6. Step 6: Final answer
    x = 103,359,567.90

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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.