Home / 142,191.84-196,224.12-78,529.32

Finding the Fourth Proportional to 142,191.84, 196,224.12 and 78,529.32

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Solution

The fourth proportional to 142,191.84, 196,224.12 and 78,529.32 is: 108,370.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,191.84 : 196,224.12 = 78,529.32 : x
  2. Step 2: Convert to fraction form
    142,191.84/196,224.12 = 78,529.32/x
  3. Step 3: Cross multiply
    142,191.84x = 196,224.12 × 78,529.32
  4. Step 4: Simplify right side
    142,191.84x = 15,409,346,711.20
  5. Step 5: Solve for x
    x = 15,409,346,711.20/142,191.84
  6. Step 6: Final answer
    x = 108,370.12

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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.