Home / 159,702.06-220,312.80-105,311.10

Finding the Fourth Proportional to 159,702.06, 220,312.80 and 105,311.10

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Solution

The fourth proportional to 159,702.06, 220,312.80 and 105,311.10 is: 145,279.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,702.06 : 220,312.80 = 105,311.10 : x
  2. Step 2: Convert to fraction form
    159,702.06/220,312.80 = 105,311.10/x
  3. Step 3: Cross multiply
    159,702.06x = 220,312.80 × 105,311.10
  4. Step 4: Simplify right side
    159,702.06x = 23,201,383,312.08
  5. Step 5: Solve for x
    x = 23,201,383,312.08/159,702.06
  6. Step 6: Final answer
    x = 145,279.17

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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.