Home / 180,933.28-249,717.80-100,386.72

Finding the Fourth Proportional to 180,933.28, 249,717.80 and 100,386.72

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Solution

The fourth proportional to 180,933.28, 249,717.80 and 100,386.72 is: 138,550.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,933.28 : 249,717.80 = 100,386.72 : x
  2. Step 2: Convert to fraction form
    180,933.28/249,717.80 = 100,386.72/x
  3. Step 3: Cross multiply
    180,933.28x = 249,717.80 × 100,386.72
  4. Step 4: Simplify right side
    180,933.28x = 25,068,350,867.62
  5. Step 5: Solve for x
    x = 25,068,350,867.62/180,933.28
  6. Step 6: Final answer
    x = 138,550.25

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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.