Home / 105,508.21-145,615.19-60,175.80

Finding the Fourth Proportional to 105,508.21, 145,615.19 and 60,175.80

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Solution

The fourth proportional to 105,508.21, 145,615.19 and 60,175.80 is: 83,050.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,508.21 : 145,615.19 = 60,175.80 : x
  2. Step 2: Convert to fraction form
    105,508.21/145,615.19 = 60,175.80/x
  3. Step 3: Cross multiply
    105,508.21x = 145,615.19 × 60,175.80
  4. Step 4: Simplify right side
    105,508.21x = 8,762,510,700.84
  5. Step 5: Solve for x
    x = 8,762,510,700.84/105,508.21
  6. Step 6: Final answer
    x = 83,050.51

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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.