Home / 99,391,022.91-148,892,582.67-77,428,566.78

Finding the Fourth Proportional to 99,391,022.91, 148,892,582.67 and 77,428,566.78

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Solution

The fourth proportional to 99,391,022.91, 148,892,582.67 and 77,428,566.78 is: 115,991,756.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,391,022.91 : 148,892,582.67 = 77,428,566.78 : x
  2. Step 2: Convert to fraction form
    99,391,022.91/148,892,582.67 = 77,428,566.78/x
  3. Step 3: Cross multiply
    99,391,022.91x = 148,892,582.67 × 77,428,566.78
  4. Step 4: Simplify right side
    99,391,022.91x = 11,528,539,280,310,764
  5. Step 5: Solve for x
    x = 11,528,539,280,310,764/99,391,022.91
  6. Step 6: Final answer
    x = 115,991,756.02

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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.