Home / 158,522.08-218,760-86,905.12

Finding the Fourth Proportional to 158,522.08, 218,760 and 86,905.12

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Solution

The fourth proportional to 158,522.08, 218,760 and 86,905.12 is: 119,928.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,522.08 : 218,760 = 86,905.12 : x
  2. Step 2: Convert to fraction form
    158,522.08/218,760 = 86,905.12/x
  3. Step 3: Cross multiply
    158,522.08x = 218,760 × 86,905.12
  4. Step 4: Simplify right side
    158,522.08x = 19,011,364,051.20
  5. Step 5: Solve for x
    x = 19,011,364,051.20/158,522.08
  6. Step 6: Final answer
    x = 119,928.81

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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.