Home / 142,193.06-196,222.66-78,529.49

Finding the Fourth Proportional to 142,193.06, 196,222.66 and 78,529.49

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Solution

The fourth proportional to 142,193.06, 196,222.66 and 78,529.49 is: 108,368.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,193.06 : 196,222.66 = 78,529.49 : x
  2. Step 2: Convert to fraction form
    142,193.06/196,222.66 = 78,529.49/x
  3. Step 3: Cross multiply
    142,193.06x = 196,222.66 × 78,529.49
  4. Step 4: Simplify right side
    142,193.06x = 15,409,265,416.24
  5. Step 5: Solve for x
    x = 15,409,265,416.24/142,193.06
  6. Step 6: Final answer
    x = 108,368.62

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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.