Home / 180,972.93-249,744.15-100,405.74

Finding the Fourth Proportional to 180,972.93, 249,744.15 and 100,405.74

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Solution

The fourth proportional to 180,972.93, 249,744.15 and 100,405.74 is: 138,560.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,972.93 : 249,744.15 = 100,405.74 : x
  2. Step 2: Convert to fraction form
    180,972.93/249,744.15 = 100,405.74/x
  3. Step 3: Cross multiply
    180,972.93x = 249,744.15 × 100,405.74
  4. Step 4: Simplify right side
    180,972.93x = 25,075,746,191.42
  5. Step 5: Solve for x
    x = 25,075,746,191.42/180,972.93
  6. Step 6: Final answer
    x = 138,560.76

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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.