Home / 128,212.64-192,328.56-39,527.84

Finding the Fourth Proportional to 128,212.64, 192,328.56 and 39,527.84

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Solution

The fourth proportional to 128,212.64, 192,328.56 and 39,527.84 is: 59,294.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,212.64 : 192,328.56 = 39,527.84 : x
  2. Step 2: Convert to fraction form
    128,212.64/192,328.56 = 39,527.84/x
  3. Step 3: Cross multiply
    128,212.64x = 192,328.56 × 39,527.84
  4. Step 4: Simplify right side
    128,212.64x = 7,602,332,547.11
  5. Step 5: Solve for x
    x = 7,602,332,547.11/128,212.64
  6. Step 6: Final answer
    x = 59,294.72

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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.