Home / 86,987.37-130,317.39-68,210.40

Finding the Fourth Proportional to 86,987.37, 130,317.39 and 68,210.40

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Solution

The fourth proportional to 86,987.37, 130,317.39 and 68,210.40 is: 102,187.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,987.37 : 130,317.39 = 68,210.40 : x
  2. Step 2: Convert to fraction form
    86,987.37/130,317.39 = 68,210.40/x
  3. Step 3: Cross multiply
    86,987.37x = 130,317.39 × 68,210.40
  4. Step 4: Simplify right side
    86,987.37x = 8,889,001,298.86
  5. Step 5: Solve for x
    x = 8,889,001,298.86/86,987.37
  6. Step 6: Final answer
    x = 102,187.26

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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.