Home / 158,253.19-218,394.56-86,633.21

Finding the Fourth Proportional to 158,253.19, 218,394.56 and 86,633.21

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Solution

The fourth proportional to 158,253.19, 218,394.56 and 86,633.21 is: 119,556.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,253.19 : 218,394.56 = 86,633.21 : x
  2. Step 2: Convert to fraction form
    158,253.19/218,394.56 = 86,633.21/x
  3. Step 3: Cross multiply
    158,253.19x = 218,394.56 × 86,633.21
  4. Step 4: Simplify right side
    158,253.19x = 18,920,221,779.34
  5. Step 5: Solve for x
    x = 18,920,221,779.34/158,253.19
  6. Step 6: Final answer
    x = 119,556.65

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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.