Home / 86,817.15-130,225.73-76,103.55

Finding the Fourth Proportional to 86,817.15, 130,225.73 and 76,103.55

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Solution

The fourth proportional to 86,817.15, 130,225.73 and 76,103.55 is: 114,155.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,817.15 : 130,225.73 = 76,103.55 : x
  2. Step 2: Convert to fraction form
    86,817.15/130,225.73 = 76,103.55/x
  3. Step 3: Cross multiply
    86,817.15x = 130,225.73 × 76,103.55
  4. Step 4: Simplify right side
    86,817.15x = 9,910,639,973.82
  5. Step 5: Solve for x
    x = 9,910,639,973.82/86,817.15
  6. Step 6: Final answer
    x = 114,155.33

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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.