Home / 103,345.12-142,659.60-69,856.48

Finding the Fourth Proportional to 103,345.12, 142,659.60 and 69,856.48

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Solution

The fourth proportional to 103,345.12, 142,659.60 and 69,856.48 is: 96,431.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,345.12 : 142,659.60 = 69,856.48 : x
  2. Step 2: Convert to fraction form
    103,345.12/142,659.60 = 69,856.48/x
  3. Step 3: Cross multiply
    103,345.12x = 142,659.60 × 69,856.48
  4. Step 4: Simplify right side
    103,345.12x = 9,965,697,494.21
  5. Step 5: Solve for x
    x = 9,965,697,494.21/103,345.12
  6. Step 6: Final answer
    x = 96,431.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.