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Finding the Fourth Proportional to 180,639.56, 249,282.56 and 100,072.32

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Solution

The fourth proportional to 180,639.56, 249,282.56 and 100,072.32 is: 138,099.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,639.56 : 249,282.56 = 100,072.32 : x
  2. Step 2: Convert to fraction form
    180,639.56/249,282.56 = 100,072.32/x
  3. Step 3: Cross multiply
    180,639.56x = 249,282.56 × 100,072.32
  4. Step 4: Simplify right side
    180,639.56x = 24,946,284,114.74
  5. Step 5: Solve for x
    x = 24,946,284,114.74/180,639.56
  6. Step 6: Final answer
    x = 138,099.78

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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.