Home / 103,136.10-142,325.26-57,195.48

Finding the Fourth Proportional to 103,136.10, 142,325.26 and 57,195.48

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Solution

The fourth proportional to 103,136.10, 142,325.26 and 57,195.48 is: 78,928.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,136.10 : 142,325.26 = 57,195.48 : x
  2. Step 2: Convert to fraction form
    103,136.10/142,325.26 = 57,195.48/x
  3. Step 3: Cross multiply
    103,136.10x = 142,325.26 × 57,195.48
  4. Step 4: Simplify right side
    103,136.10x = 8,140,361,561.82
  5. Step 5: Solve for x
    x = 8,140,361,561.82/103,136.10
  6. Step 6: Final answer
    x = 78,928.34

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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.