Home / 130,658.28-195,987.51-86,274.60

Finding the Fourth Proportional to 130,658.28, 195,987.51 and 86,274.60

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Solution

The fourth proportional to 130,658.28, 195,987.51 and 86,274.60 is: 129,411.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,658.28 : 195,987.51 = 86,274.60 : x
  2. Step 2: Convert to fraction form
    130,658.28/195,987.51 = 86,274.60/x
  3. Step 3: Cross multiply
    130,658.28x = 195,987.51 × 86,274.60
  4. Step 4: Simplify right side
    130,658.28x = 16,908,744,030.25
  5. Step 5: Solve for x
    x = 16,908,744,030.25/130,658.28
  6. Step 6: Final answer
    x = 129,411.96

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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.