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Finding the Fourth Proportional to 141,695.84, 212,543.84 and 78,554.72

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Solution

The fourth proportional to 141,695.84, 212,543.84 and 78,554.72 is: 117,832.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,695.84 : 212,543.84 = 78,554.72 : x
  2. Step 2: Convert to fraction form
    141,695.84/212,543.84 = 78,554.72/x
  3. Step 3: Cross multiply
    141,695.84x = 212,543.84 × 78,554.72
  4. Step 4: Simplify right side
    141,695.84x = 16,696,321,838.92
  5. Step 5: Solve for x
    x = 16,696,321,838.92/141,695.84
  6. Step 6: Final answer
    x = 117,832.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.