Home / 180,933.30-249,717.78-100,386.72

Finding the Fourth Proportional to 180,933.30, 249,717.78 and 100,386.72

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Solution

The fourth proportional to 180,933.30, 249,717.78 and 100,386.72 is: 138,550.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,933.30 : 249,717.78 = 100,386.72 : x
  2. Step 2: Convert to fraction form
    180,933.30/249,717.78 = 100,386.72/x
  3. Step 3: Cross multiply
    180,933.30x = 249,717.78 × 100,386.72
  4. Step 4: Simplify right side
    180,933.30x = 25,068,348,859.88
  5. Step 5: Solve for x
    x = 25,068,348,859.88/180,933.30
  6. Step 6: Final answer
    x = 138,550.22

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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.