Home / 158,436.68-218,641.34-86,816.50

Finding the Fourth Proportional to 158,436.68, 218,641.34 and 86,816.50

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Solution

The fourth proportional to 158,436.68, 218,641.34 and 86,816.50 is: 119,806.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,436.68 : 218,641.34 = 86,816.50 : x
  2. Step 2: Convert to fraction form
    158,436.68/218,641.34 = 86,816.50/x
  3. Step 3: Cross multiply
    158,436.68x = 218,641.34 × 86,816.50
  4. Step 4: Simplify right side
    158,436.68x = 18,981,675,564.55
  5. Step 5: Solve for x
    x = 18,981,675,564.55/158,436.68
  6. Step 6: Final answer
    x = 119,806.07

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1.5x scale

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.