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Finding the Fourth Proportional to 127,941.95, 191,871.37 and 42,529.87

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Solution

The fourth proportional to 127,941.95, 191,871.37 and 42,529.87 is: 63,780.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,941.95 : 191,871.37 = 42,529.87 : x
  2. Step 2: Convert to fraction form
    127,941.95/191,871.37 = 42,529.87/x
  3. Step 3: Cross multiply
    127,941.95x = 191,871.37 × 42,529.87
  4. Step 4: Simplify right side
    127,941.95x = 8,160,263,397.32
  5. Step 5: Solve for x
    x = 8,160,263,397.32/127,941.95
  6. Step 6: Final answer
    x = 63,780.98

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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.