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Finding the Fourth Proportional to 130,438.80, 195,658.20 and 100,914.30

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Solution

The fourth proportional to 130,438.80, 195,658.20 and 100,914.30 is: 151,371.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,438.80 : 195,658.20 = 100,914.30 : x
  2. Step 2: Convert to fraction form
    130,438.80/195,658.20 = 100,914.30/x
  3. Step 3: Cross multiply
    130,438.80x = 195,658.20 × 100,914.30
  4. Step 4: Simplify right side
    130,438.80x = 19,744,710,292.26
  5. Step 5: Solve for x
    x = 19,744,710,292.26/130,438.80
  6. Step 6: Final answer
    x = 151,371.45

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1.5x scale

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.