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Finding the Fourth Proportional to 189,168.68, 261,071.08 and 141,339

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Solution

The fourth proportional to 189,168.68, 261,071.08 and 141,339 is: 195,061.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,168.68 : 261,071.08 = 141,339 : x
  2. Step 2: Convert to fraction form
    189,168.68/261,071.08 = 141,339/x
  3. Step 3: Cross multiply
    189,168.68x = 261,071.08 × 141,339
  4. Step 4: Simplify right side
    189,168.68x = 36,899,525,376.12
  5. Step 5: Solve for x
    x = 36,899,525,376.12/189,168.68
  6. Step 6: Final answer
    x = 195,061.49

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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.