Home / 131,578.10-197,023.60-86,457.59

Finding the Fourth Proportional to 131,578.10, 197,023.60 and 86,457.59

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Solution

The fourth proportional to 131,578.10, 197,023.60 and 86,457.59 is: 129,460.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,578.10 : 197,023.60 = 86,457.59 : x
  2. Step 2: Convert to fraction form
    131,578.10/197,023.60 = 86,457.59/x
  3. Step 3: Cross multiply
    131,578.10x = 197,023.60 × 86,457.59
  4. Step 4: Simplify right side
    131,578.10x = 17,034,185,629.12
  5. Step 5: Solve for x
    x = 17,034,185,629.12/131,578.10
  6. Step 6: Final answer
    x = 129,460.64

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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.