Home / 113,020.70-169,312.35-66,218.90

Finding the Fourth Proportional to 113,020.70, 169,312.35 and 66,218.90

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Solution

The fourth proportional to 113,020.70, 169,312.35 and 66,218.90 is: 99,200.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,020.70 : 169,312.35 = 66,218.90 : x
  2. Step 2: Convert to fraction form
    113,020.70/169,312.35 = 66,218.90/x
  3. Step 3: Cross multiply
    113,020.70x = 169,312.35 × 66,218.90
  4. Step 4: Simplify right side
    113,020.70x = 11,211,677,573.42
  5. Step 5: Solve for x
    x = 11,211,677,573.42/113,020.70
  6. Step 6: Final answer
    x = 99,200.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.