Home / 86,812.10-130,218.15-51,236.90

Finding the Fourth Proportional to 86,812.10, 130,218.15 and 51,236.90

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Solution

The fourth proportional to 86,812.10, 130,218.15 and 51,236.90 is: 76,855.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,812.10 : 130,218.15 = 51,236.90 : x
  2. Step 2: Convert to fraction form
    86,812.10/130,218.15 = 51,236.90/x
  3. Step 3: Cross multiply
    86,812.10x = 130,218.15 × 51,236.90
  4. Step 4: Simplify right side
    86,812.10x = 6,671,974,329.74
  5. Step 5: Solve for x
    x = 6,671,974,329.74/86,812.10
  6. Step 6: Final answer
    x = 76,855.35

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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.