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Finding the Fourth Proportional to 145,959.14, 201,423.03 and 78,891.14

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Solution

The fourth proportional to 145,959.14, 201,423.03 and 78,891.14 is: 108,869.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,959.14 : 201,423.03 = 78,891.14 : x
  2. Step 2: Convert to fraction form
    145,959.14/201,423.03 = 78,891.14/x
  3. Step 3: Cross multiply
    145,959.14x = 201,423.03 × 78,891.14
  4. Step 4: Simplify right side
    145,959.14x = 15,890,492,458.95
  5. Step 5: Solve for x
    x = 15,890,492,458.95/145,959.14
  6. Step 6: Final answer
    x = 108,869.46

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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.