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Finding the Fourth Proportional to 130,437.80, 195,656.70 and 115,404.20

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Solution

The fourth proportional to 130,437.80, 195,656.70 and 115,404.20 is: 173,106.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,437.80 : 195,656.70 = 115,404.20 : x
  2. Step 2: Convert to fraction form
    130,437.80/195,656.70 = 115,404.20/x
  3. Step 3: Cross multiply
    130,437.80x = 195,656.70 × 115,404.20
  4. Step 4: Simplify right side
    130,437.80x = 22,579,604,938.14
  5. Step 5: Solve for x
    x = 22,579,604,938.14/130,437.80
  6. Step 6: Final answer
    x = 173,106.30

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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.