Home / 158,109.72-218,193.26-86,488.20

Finding the Fourth Proportional to 158,109.72, 218,193.26 and 86,488.20

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Solution

The fourth proportional to 158,109.72, 218,193.26 and 86,488.20 is: 119,354.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,109.72 : 218,193.26 = 86,488.20 : x
  2. Step 2: Convert to fraction form
    158,109.72/218,193.26 = 86,488.20/x
  3. Step 3: Cross multiply
    158,109.72x = 218,193.26 × 86,488.20
  4. Step 4: Simplify right side
    158,109.72x = 18,871,141,877.09
  5. Step 5: Solve for x
    x = 18,871,141,877.09/158,109.72
  6. Step 6: Final answer
    x = 119,354.72

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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.