Home / 142,219.92-196,261.50-77,688.39

Finding the Fourth Proportional to 142,219.92, 196,261.50 and 77,688.39

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Solution

The fourth proportional to 142,219.92, 196,261.50 and 77,688.39 is: 107,208.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,219.92 : 196,261.50 = 77,688.39 : x
  2. Step 2: Convert to fraction form
    142,219.92/196,261.50 = 77,688.39/x
  3. Step 3: Cross multiply
    142,219.92x = 196,261.50 × 77,688.39
  4. Step 4: Simplify right side
    142,219.92x = 15,247,239,953.99
  5. Step 5: Solve for x
    x = 15,247,239,953.99/142,219.92
  6. Step 6: Final answer
    x = 107,208.89

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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.