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Finding the Fourth Proportional to 180,552.53, 249,162.33 and 99,980.05

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Solution

The fourth proportional to 180,552.53, 249,162.33 and 99,980.05 is: 137,972.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,552.53 : 249,162.33 = 99,980.05 : x
  2. Step 2: Convert to fraction form
    180,552.53/249,162.33 = 99,980.05/x
  3. Step 3: Cross multiply
    180,552.53x = 249,162.33 × 99,980.05
  4. Step 4: Simplify right side
    180,552.53x = 24,911,261,711.62
  5. Step 5: Solve for x
    x = 24,911,261,711.62/180,552.53
  6. Step 6: Final answer
    x = 137,972.38

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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.