Home / 89,142,426.20-133,713,639.30-81,489,675.80

Finding the Fourth Proportional to 89,142,426.20, 133,713,639.30 and 81,489,675.80

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Solution

The fourth proportional to 89,142,426.20, 133,713,639.30 and 81,489,675.80 is: 122,234,513.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,142,426.20 : 133,713,639.30 = 81,489,675.80 : x
  2. Step 2: Convert to fraction form
    89,142,426.20/133,713,639.30 = 81,489,675.80/x
  3. Step 3: Cross multiply
    89,142,426.20x = 133,713,639.30 × 81,489,675.80
  4. Step 4: Simplify right side
    89,142,426.20x = 10,896,281,116,595,138
  5. Step 5: Solve for x
    x = 10,896,281,116,595,138/89,142,426.20
  6. Step 6: Final answer
    x = 122,234,513.70

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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.