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Finding the Fourth Proportional to 180,636.56, 249,278.42 and 100,069.32

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Solution

The fourth proportional to 180,636.56, 249,278.42 and 100,069.32 is: 138,095.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,636.56 : 249,278.42 = 100,069.32 : x
  2. Step 2: Convert to fraction form
    180,636.56/249,278.42 = 100,069.32/x
  3. Step 3: Cross multiply
    180,636.56x = 249,278.42 × 100,069.32
  4. Step 4: Simplify right side
    180,636.56x = 24,945,121,980.07
  5. Step 5: Solve for x
    x = 24,945,121,980.07/180,636.56
  6. Step 6: Final answer
    x = 138,095.64

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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.