Home / 108,565.40-162,823.80-71,386.40

Finding the Fourth Proportional to 108,565.40, 162,823.80 and 71,386.40

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Solution

The fourth proportional to 108,565.40, 162,823.80 and 71,386.40 is: 107,063.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,565.40 : 162,823.80 = 71,386.40 : x
  2. Step 2: Convert to fraction form
    108,565.40/162,823.80 = 71,386.40/x
  3. Step 3: Cross multiply
    108,565.40x = 162,823.80 × 71,386.40
  4. Step 4: Simplify right side
    108,565.40x = 11,623,404,916.32
  5. Step 5: Solve for x
    x = 11,623,404,916.32/108,565.40
  6. Step 6: Final answer
    x = 107,063.62

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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.