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Finding the Fourth Proportional to 180,919.56, 249,658.80 and 100,341.30

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Solution

The fourth proportional to 180,919.56, 249,658.80 and 100,341.30 is: 138,465.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,919.56 : 249,658.80 = 100,341.30 : x
  2. Step 2: Convert to fraction form
    180,919.56/249,658.80 = 100,341.30/x
  3. Step 3: Cross multiply
    180,919.56x = 249,658.80 × 100,341.30
  4. Step 4: Simplify right side
    180,919.56x = 25,051,088,548.44
  5. Step 5: Solve for x
    x = 25,051,088,548.44/180,919.56
  6. Step 6: Final answer
    x = 138,465.34

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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.