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Finding the Fourth Proportional to 130,139.80, 194,777.70 and 94,499.80

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Solution

The fourth proportional to 130,139.80, 194,777.70 and 94,499.80 is: 141,436.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,139.80 : 194,777.70 = 94,499.80 : x
  2. Step 2: Convert to fraction form
    130,139.80/194,777.70 = 94,499.80/x
  3. Step 3: Cross multiply
    130,139.80x = 194,777.70 × 94,499.80
  4. Step 4: Simplify right side
    130,139.80x = 18,406,453,694.46
  5. Step 5: Solve for x
    x = 18,406,453,694.46/130,139.80
  6. Step 6: Final answer
    x = 141,436.01

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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.