Home / 180,977.13-249,778.42-100,430.53

Finding the Fourth Proportional to 180,977.13, 249,778.42 and 100,430.53

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Solution

The fourth proportional to 180,977.13, 249,778.42 and 100,430.53 is: 138,610.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,977.13 : 249,778.42 = 100,430.53 : x
  2. Step 2: Convert to fraction form
    180,977.13/249,778.42 = 100,430.53/x
  3. Step 3: Cross multiply
    180,977.13x = 249,778.42 × 100,430.53
  4. Step 4: Simplify right side
    180,977.13x = 25,085,379,103.16
  5. Step 5: Solve for x
    x = 25,085,379,103.16/180,977.13
  6. Step 6: Final answer
    x = 138,610.77

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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.