Home / 88,740.10-133,110.15-81,981.70

Finding the Fourth Proportional to 88,740.10, 133,110.15 and 81,981.70

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Solution

The fourth proportional to 88,740.10, 133,110.15 and 81,981.70 is: 122,972.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,740.10 : 133,110.15 = 81,981.70 : x
  2. Step 2: Convert to fraction form
    88,740.10/133,110.15 = 81,981.70/x
  3. Step 3: Cross multiply
    88,740.10x = 133,110.15 × 81,981.70
  4. Step 4: Simplify right side
    88,740.10x = 10,912,596,384.26
  5. Step 5: Solve for x
    x = 10,912,596,384.26/88,740.10
  6. Step 6: Final answer
    x = 122,972.55

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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.