Home / 116,878.92-161,319.74-71,581.86

Finding the Fourth Proportional to 116,878.92, 161,319.74 and 71,581.86

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Solution

The fourth proportional to 116,878.92, 161,319.74 and 71,581.86 is: 98,799.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,878.92 : 161,319.74 = 71,581.86 : x
  2. Step 2: Convert to fraction form
    116,878.92/161,319.74 = 71,581.86/x
  3. Step 3: Cross multiply
    116,878.92x = 161,319.74 × 71,581.86
  4. Step 4: Simplify right side
    116,878.92x = 11,547,566,686.01
  5. Step 5: Solve for x
    x = 11,547,566,686.01/116,878.92
  6. Step 6: Final answer
    x = 98,799.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.