Home / 142,337.25-196,408.40-78,666.39

Finding the Fourth Proportional to 142,337.25, 196,408.40 and 78,666.39

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Solution

The fourth proportional to 142,337.25, 196,408.40 and 78,666.39 is: 108,550.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,337.25 : 196,408.40 = 78,666.39 : x
  2. Step 2: Convert to fraction form
    142,337.25/196,408.40 = 78,666.39/x
  3. Step 3: Cross multiply
    142,337.25x = 196,408.40 × 78,666.39
  4. Step 4: Simplify right side
    142,337.25x = 15,450,739,400.34
  5. Step 5: Solve for x
    x = 15,450,739,400.34/142,337.25
  6. Step 6: Final answer
    x = 108,550.22

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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.