Home / 103,615.12-142,987.44-58,289.68

Finding the Fourth Proportional to 103,615.12, 142,987.44 and 58,289.68

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Solution

The fourth proportional to 103,615.12, 142,987.44 and 58,289.68 is: 80,438.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,615.12 : 142,987.44 = 58,289.68 : x
  2. Step 2: Convert to fraction form
    103,615.12/142,987.44 = 58,289.68/x
  3. Step 3: Cross multiply
    103,615.12x = 142,987.44 × 58,289.68
  4. Step 4: Simplify right side
    103,615.12x = 8,334,692,121.62
  5. Step 5: Solve for x
    x = 8,334,692,121.62/103,615.12
  6. Step 6: Final answer
    x = 80,438.96

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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.