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Finding the Fourth Proportional to 180,697.28, 249,486.72 and 138,181.76

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Solution

The fourth proportional to 180,697.28, 249,486.72 and 138,181.76 is: 190,786.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,697.28 : 249,486.72 = 138,181.76 : x
  2. Step 2: Convert to fraction form
    180,697.28/249,486.72 = 138,181.76/x
  3. Step 3: Cross multiply
    180,697.28x = 249,486.72 × 138,181.76
  4. Step 4: Simplify right side
    180,697.28x = 34,474,514,066.23
  5. Step 5: Solve for x
    x = 34,474,514,066.23/180,697.28
  6. Step 6: Final answer
    x = 190,786.02

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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.