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Finding the Fourth Proportional to 103,235.88, 142,509.06 and 69,747.24

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Solution

The fourth proportional to 103,235.88, 142,509.06 and 69,747.24 is: 96,280.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,235.88 : 142,509.06 = 69,747.24 : x
  2. Step 2: Convert to fraction form
    103,235.88/142,509.06 = 69,747.24/x
  3. Step 3: Cross multiply
    103,235.88x = 142,509.06 × 69,747.24
  4. Step 4: Simplify right side
    103,235.88x = 9,939,613,609.99
  5. Step 5: Solve for x
    x = 9,939,613,609.99/103,235.88
  6. Step 6: Final answer
    x = 96,280.61

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1.5x scale

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.