Home / 86,823.10-130,234.65-80,602.30

Finding the Fourth Proportional to 86,823.10, 130,234.65 and 80,602.30

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Solution

The fourth proportional to 86,823.10, 130,234.65 and 80,602.30 is: 120,903.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,823.10 : 130,234.65 = 80,602.30 : x
  2. Step 2: Convert to fraction form
    86,823.10/130,234.65 = 80,602.30/x
  3. Step 3: Cross multiply
    86,823.10x = 130,234.65 × 80,602.30
  4. Step 4: Simplify right side
    86,823.10x = 10,497,212,329.70
  5. Step 5: Solve for x
    x = 10,497,212,329.70/86,823.10
  6. Step 6: Final answer
    x = 120,903.45

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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.