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Finding the Fourth Proportional to 103,616.94, 142,987.21 and 58,295.82

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Solution

The fourth proportional to 103,616.94, 142,987.21 and 58,295.82 is: 80,445.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,616.94 : 142,987.21 = 58,295.82 : x
  2. Step 2: Convert to fraction form
    103,616.94/142,987.21 = 58,295.82/x
  3. Step 3: Cross multiply
    103,616.94x = 142,987.21 × 58,295.82
  4. Step 4: Simplify right side
    103,616.94x = 8,335,556,656.46
  5. Step 5: Solve for x
    x = 8,335,556,656.46/103,616.94
  6. Step 6: Final answer
    x = 80,445.89

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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.