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Finding the Fourth Proportional to 130,055.10, 194,754.60 and 103,811.10

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Solution

The fourth proportional to 130,055.10, 194,754.60 and 103,811.10 is: 155,454.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,055.10 : 194,754.60 = 103,811.10 : x
  2. Step 2: Convert to fraction form
    130,055.10/194,754.60 = 103,811.10/x
  3. Step 3: Cross multiply
    130,055.10x = 194,754.60 × 103,811.10
  4. Step 4: Simplify right side
    130,055.10x = 20,217,689,256.06
  5. Step 5: Solve for x
    x = 20,217,689,256.06/130,055.10
  6. Step 6: Final answer
    x = 155,454.80

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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.