Home / 103,672.02-142,936.61-67,805.22

Finding the Fourth Proportional to 103,672.02, 142,936.61 and 67,805.22

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Solution

The fourth proportional to 103,672.02, 142,936.61 and 67,805.22 is: 93,485.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,672.02 : 142,936.61 = 67,805.22 : x
  2. Step 2: Convert to fraction form
    103,672.02/142,936.61 = 67,805.22/x
  3. Step 3: Cross multiply
    103,672.02x = 142,936.61 × 67,805.22
  4. Step 4: Simplify right side
    103,672.02x = 9,691,847,948.08
  5. Step 5: Solve for x
    x = 9,691,847,948.08/103,672.02
  6. Step 6: Final answer
    x = 93,485.67

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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.