Home / 143,990,335.10-198,732,528.60-81,285,545.90

Finding the Fourth Proportional to 143,990,335.10, 198,732,528.60 and 81,285,545.90

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Solution

The fourth proportional to 143,990,335.10, 198,732,528.60 and 81,285,545.90 is: 112,188,655.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,990,335.10 : 198,732,528.60 = 81,285,545.90 : x
  2. Step 2: Convert to fraction form
    143,990,335.10/198,732,528.60 = 81,285,545.90/x
  3. Step 3: Cross multiply
    143,990,335.10x = 198,732,528.60 × 81,285,545.90
  4. Step 4: Simplify right side
    143,990,335.10x = 16,154,082,075,338,364
  5. Step 5: Solve for x
    x = 16,154,082,075,338,364/143,990,335.10
  6. Step 6: Final answer
    x = 112,188,655.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.