Home / 99,391,028.16-148,892,590.55-77,428,572.03

Finding the Fourth Proportional to 99,391,028.16, 148,892,590.55 and 77,428,572.03

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Solution

The fourth proportional to 99,391,028.16, 148,892,590.55 and 77,428,572.03 is: 115,991,763.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,391,028.16 : 148,892,590.55 = 77,428,572.03 : x
  2. Step 2: Convert to fraction form
    99,391,028.16/148,892,590.55 = 77,428,572.03/x
  3. Step 3: Cross multiply
    99,391,028.16x = 148,892,590.55 × 77,428,572.03
  4. Step 4: Simplify right side
    99,391,028.16x = 11,528,540,671,746,828
  5. Step 5: Solve for x
    x = 11,528,540,671,746,828/99,391,028.16
  6. Step 6: Final answer
    x = 115,991,763.90

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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.