Home / 180,708.80-249,387.53-100,145.39

Finding the Fourth Proportional to 180,708.80, 249,387.53 and 100,145.39

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Solution

The fourth proportional to 180,708.80, 249,387.53 and 100,145.39 is: 138,205.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,708.80 : 249,387.53 = 100,145.39 : x
  2. Step 2: Convert to fraction form
    180,708.80/249,387.53 = 100,145.39/x
  3. Step 3: Cross multiply
    180,708.80x = 249,387.53 × 100,145.39
  4. Step 4: Simplify right side
    180,708.80x = 24,975,009,705.32
  5. Step 5: Solve for x
    x = 24,975,009,705.32/180,708.80
  6. Step 6: Final answer
    x = 138,205.83

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1.5x scale

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.