Home / 142,222.34-196,263.08-78,558.76

Finding the Fourth Proportional to 142,222.34, 196,263.08 and 78,558.76

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Solution

The fourth proportional to 142,222.34, 196,263.08 and 78,558.76 is: 108,409.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,222.34 : 196,263.08 = 78,558.76 : x
  2. Step 2: Convert to fraction form
    142,222.34/196,263.08 = 78,558.76/x
  3. Step 3: Cross multiply
    142,222.34x = 196,263.08 × 78,558.76
  4. Step 4: Simplify right side
    142,222.34x = 15,418,184,198.58
  5. Step 5: Solve for x
    x = 15,418,184,198.58/142,222.34
  6. Step 6: Final answer
    x = 108,409.02

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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.