Home / 180,864.12-249,589.80-100,291.80

Finding the Fourth Proportional to 180,864.12, 249,589.80 and 100,291.80

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Solution

The fourth proportional to 180,864.12, 249,589.80 and 100,291.80 is: 138,401.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,864.12 : 249,589.80 = 100,291.80 : x
  2. Step 2: Convert to fraction form
    180,864.12/249,589.80 = 100,291.80/x
  3. Step 3: Cross multiply
    180,864.12x = 249,589.80 × 100,291.80
  4. Step 4: Simplify right side
    180,864.12x = 25,031,810,303.64
  5. Step 5: Solve for x
    x = 25,031,810,303.64/180,864.12
  6. Step 6: Final answer
    x = 138,401.19

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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.