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Finding the Fourth Proportional to 180,977.55, 249,740.55 and 100,404.21

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Solution

The fourth proportional to 180,977.55, 249,740.55 and 100,404.21 is: 138,553.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,977.55 : 249,740.55 = 100,404.21 : x
  2. Step 2: Convert to fraction form
    180,977.55/249,740.55 = 100,404.21/x
  3. Step 3: Cross multiply
    180,977.55x = 249,740.55 × 100,404.21
  4. Step 4: Simplify right side
    180,977.55x = 25,075,002,627.72
  5. Step 5: Solve for x
    x = 25,075,002,627.72/180,977.55
  6. Step 6: Final answer
    x = 138,553.11

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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.