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Finding the Fourth Proportional to 112,328,494.80, 168,492,742.20 and 99,563,413.20

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Solution

The fourth proportional to 112,328,494.80, 168,492,742.20 and 99,563,413.20 is: 149,345,119.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,328,494.80 : 168,492,742.20 = 99,563,413.20 : x
  2. Step 2: Convert to fraction form
    112,328,494.80/168,492,742.20 = 99,563,413.20/x
  3. Step 3: Cross multiply
    112,328,494.80x = 168,492,742.20 × 99,563,413.20
  4. Step 4: Simplify right side
    112,328,494.80x = 16,775,712,512,859,676
  5. Step 5: Solve for x
    x = 16,775,712,512,859,676/112,328,494.80
  6. Step 6: Final answer
    x = 149,345,119.80

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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.