Home / 99,291,920.70-148,937,881.05-68,680,919.10

Finding the Fourth Proportional to 99,291,920.70, 148,937,881.05 and 68,680,919.10

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Solution

The fourth proportional to 99,291,920.70, 148,937,881.05 and 68,680,919.10 is: 103,021,378.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,291,920.70 : 148,937,881.05 = 68,680,919.10 : x
  2. Step 2: Convert to fraction form
    99,291,920.70/148,937,881.05 = 68,680,919.10/x
  3. Step 3: Cross multiply
    99,291,920.70x = 148,937,881.05 × 68,680,919.10
  4. Step 4: Simplify right side
    99,291,920.70x = 10,229,190,559,320,472
  5. Step 5: Solve for x
    x = 10,229,190,559,320,472/99,291,920.70
  6. Step 6: Final answer
    x = 103,021,378.65

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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.