Home / 86,823.10-130,234.65-84,879.10

Finding the Fourth Proportional to 86,823.10, 130,234.65 and 84,879.10

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Solution

The fourth proportional to 86,823.10, 130,234.65 and 84,879.10 is: 127,318.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,823.10 : 130,234.65 = 84,879.10 : x
  2. Step 2: Convert to fraction form
    86,823.10/130,234.65 = 84,879.10/x
  3. Step 3: Cross multiply
    86,823.10x = 130,234.65 × 84,879.10
  4. Step 4: Simplify right side
    86,823.10x = 11,054,199,880.82
  5. Step 5: Solve for x
    x = 11,054,199,880.82/86,823.10
  6. Step 6: Final answer
    x = 127,318.65

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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.