Home / 154,747.13-213,554.27-87,679.13

Finding the Fourth Proportional to 154,747.13, 213,554.27 and 87,679.13

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Solution

The fourth proportional to 154,747.13, 213,554.27 and 87,679.13 is: 120,999.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,747.13 : 213,554.27 = 87,679.13 : x
  2. Step 2: Convert to fraction form
    154,747.13/213,554.27 = 87,679.13/x
  3. Step 3: Cross multiply
    154,747.13x = 213,554.27 × 87,679.13
  4. Step 4: Simplify right side
    154,747.13x = 18,724,251,752.81
  5. Step 5: Solve for x
    x = 18,724,251,752.81/154,747.13
  6. Step 6: Final answer
    x = 120,999.03

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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.