Home / 128,274.60-192,432.96-39,528.12

Finding the Fourth Proportional to 128,274.60, 192,432.96 and 39,528.12

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Solution

The fourth proportional to 128,274.60, 192,432.96 and 39,528.12 is: 59,298.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,274.60 : 192,432.96 = 39,528.12 : x
  2. Step 2: Convert to fraction form
    128,274.60/192,432.96 = 39,528.12/x
  3. Step 3: Cross multiply
    128,274.60x = 192,432.96 × 39,528.12
  4. Step 4: Simplify right side
    128,274.60x = 7,606,513,134.84
  5. Step 5: Solve for x
    x = 7,606,513,134.84/128,274.60
  6. Step 6: Final answer
    x = 59,298.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.