Home / 107,866.20-161,799.30-70,541.40

Finding the Fourth Proportional to 107,866.20, 161,799.30 and 70,541.40

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Solution

The fourth proportional to 107,866.20, 161,799.30 and 70,541.40 is: 105,812.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,866.20 : 161,799.30 = 70,541.40 : x
  2. Step 2: Convert to fraction form
    107,866.20/161,799.30 = 70,541.40/x
  3. Step 3: Cross multiply
    107,866.20x = 161,799.30 × 70,541.40
  4. Step 4: Simplify right side
    107,866.20x = 11,413,549,141.02
  5. Step 5: Solve for x
    x = 11,413,549,141.02/107,866.20
  6. Step 6: Final answer
    x = 105,812.10

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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.