Home / 89,677.04-133,456.90-86,687.24

Finding the Fourth Proportional to 89,677.04, 133,456.90 and 86,687.24

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Solution

The fourth proportional to 89,677.04, 133,456.90 and 86,687.24 is: 129,007.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,677.04 : 133,456.90 = 86,687.24 : x
  2. Step 2: Convert to fraction form
    89,677.04/133,456.90 = 86,687.24/x
  3. Step 3: Cross multiply
    89,677.04x = 133,456.90 × 86,687.24
  4. Step 4: Simplify right side
    89,677.04x = 11,569,010,319.96
  5. Step 5: Solve for x
    x = 11,569,010,319.96/89,677.04
  6. Step 6: Final answer
    x = 129,007.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.