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Finding the Fourth Proportional to 129,897.63, 194,689.71 and 63,237.87

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Solution

The fourth proportional to 129,897.63, 194,689.71 and 63,237.87 is: 94,780.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,897.63 : 194,689.71 = 63,237.87 : x
  2. Step 2: Convert to fraction form
    129,897.63/194,689.71 = 63,237.87/x
  3. Step 3: Cross multiply
    129,897.63x = 194,689.71 × 63,237.87
  4. Step 4: Simplify right side
    129,897.63x = 12,311,762,571.32
  5. Step 5: Solve for x
    x = 12,311,762,571.32/129,897.63
  6. Step 6: Final answer
    x = 94,780.50

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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.