Home / 158,240.73-218,374.29-86,619.21

Finding the Fourth Proportional to 158,240.73, 218,374.29 and 86,619.21

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Solution

The fourth proportional to 158,240.73, 218,374.29 and 86,619.21 is: 119,535.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,240.73 : 218,374.29 = 86,619.21 : x
  2. Step 2: Convert to fraction form
    158,240.73/218,374.29 = 86,619.21/x
  3. Step 3: Cross multiply
    158,240.73x = 218,374.29 × 86,619.21
  4. Step 4: Simplify right side
    158,240.73x = 18,915,408,484.11
  5. Step 5: Solve for x
    x = 18,915,408,484.11/158,240.73
  6. Step 6: Final answer
    x = 119,535.65

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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.