Home / 123,569.48-170,667.60-81,316.64

Finding the Fourth Proportional to 123,569.48, 170,667.60 and 81,316.64

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Solution

The fourth proportional to 123,569.48, 170,667.60 and 81,316.64 is: 112,310.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,569.48 : 170,667.60 = 81,316.64 : x
  2. Step 2: Convert to fraction form
    123,569.48/170,667.60 = 81,316.64/x
  3. Step 3: Cross multiply
    123,569.48x = 170,667.60 × 81,316.64
  4. Step 4: Simplify right side
    123,569.48x = 13,878,115,788.86
  5. Step 5: Solve for x
    x = 13,878,115,788.86/123,569.48
  6. Step 6: Final answer
    x = 112,310.22

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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.