Home / 103,212.72-142,463.80-67,408.30

Finding the Fourth Proportional to 103,212.72, 142,463.80 and 67,408.30

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Solution

The fourth proportional to 103,212.72, 142,463.80 and 67,408.30 is: 93,043.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,212.72 : 142,463.80 = 67,408.30 : x
  2. Step 2: Convert to fraction form
    103,212.72/142,463.80 = 67,408.30/x
  3. Step 3: Cross multiply
    103,212.72x = 142,463.80 × 67,408.30
  4. Step 4: Simplify right side
    103,212.72x = 9,603,242,569.54
  5. Step 5: Solve for x
    x = 9,603,242,569.54/103,212.72
  6. Step 6: Final answer
    x = 93,043.21

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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.