Home / 225,140.86-310,627.38-129,645.10

Finding the Fourth Proportional to 225,140.86, 310,627.38 and 129,645.10

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Solution

The fourth proportional to 225,140.86, 310,627.38 and 129,645.10 is: 178,871.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,140.86 : 310,627.38 = 129,645.10 : x
  2. Step 2: Convert to fraction form
    225,140.86/310,627.38 = 129,645.10/x
  3. Step 3: Cross multiply
    225,140.86x = 310,627.38 × 129,645.10
  4. Step 4: Simplify right side
    225,140.86x = 40,271,317,742.84
  5. Step 5: Solve for x
    x = 40,271,317,742.84/225,140.86
  6. Step 6: Final answer
    x = 178,871.65

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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.