Home / 107,902.20-161,853.30-70,577.40

Finding the Fourth Proportional to 107,902.20, 161,853.30 and 70,577.40

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Solution

The fourth proportional to 107,902.20, 161,853.30 and 70,577.40 is: 105,866.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,902.20 : 161,853.30 = 70,577.40 : x
  2. Step 2: Convert to fraction form
    107,902.20/161,853.30 = 70,577.40/x
  3. Step 3: Cross multiply
    107,902.20x = 161,853.30 × 70,577.40
  4. Step 4: Simplify right side
    107,902.20x = 11,423,185,095.42
  5. Step 5: Solve for x
    x = 11,423,185,095.42/107,902.20
  6. Step 6: Final answer
    x = 105,866.10

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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.