Home / 108,875.96-163,160.77-86,590.43

Finding the Fourth Proportional to 108,875.96, 163,160.77 and 86,590.43

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Solution

The fourth proportional to 108,875.96, 163,160.77 and 86,590.43 is: 129,763.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,875.96 : 163,160.77 = 86,590.43 : x
  2. Step 2: Convert to fraction form
    108,875.96/163,160.77 = 86,590.43/x
  3. Step 3: Cross multiply
    108,875.96x = 163,160.77 × 86,590.43
  4. Step 4: Simplify right side
    108,875.96x = 14,128,161,233.43
  5. Step 5: Solve for x
    x = 14,128,161,233.43/108,875.96
  6. Step 6: Final answer
    x = 129,763.83

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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.