Home / 145,540,006.80-218,310,010.20-72,768,019.20

Finding the Fourth Proportional to 145,540,006.80, 218,310,010.20 and 72,768,019.20

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Solution

The fourth proportional to 145,540,006.80, 218,310,010.20 and 72,768,019.20 is: 109,152,028.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,540,006.80 : 218,310,010.20 = 72,768,019.20 : x
  2. Step 2: Convert to fraction form
    145,540,006.80/218,310,010.20 = 72,768,019.20/x
  3. Step 3: Cross multiply
    145,540,006.80x = 218,310,010.20 × 72,768,019.20
  4. Step 4: Simplify right side
    145,540,006.80x = 15,885,987,013,785,796
  5. Step 5: Solve for x
    x = 15,885,987,013,785,796/145,540,006.80
  6. Step 6: Final answer
    x = 109,152,028.80

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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.