Home / 180,995.04-249,764.72-100,421.68

Finding the Fourth Proportional to 180,995.04, 249,764.72 and 100,421.68

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Solution

The fourth proportional to 180,995.04, 249,764.72 and 100,421.68 is: 138,577.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,995.04 : 249,764.72 = 100,421.68 : x
  2. Step 2: Convert to fraction form
    180,995.04/249,764.72 = 100,421.68/x
  3. Step 3: Cross multiply
    180,995.04x = 249,764.72 × 100,421.68
  4. Step 4: Simplify right side
    180,995.04x = 25,081,792,787.13
  5. Step 5: Solve for x
    x = 25,081,792,787.13/180,995.04
  6. Step 6: Final answer
    x = 138,577.24

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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.