Home / 128,015,487.28-176,661,928.73-69,278,157.33

Finding the Fourth Proportional to 128,015,487.28, 176,661,928.73 and 69,278,157.33

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Solution

The fourth proportional to 128,015,487.28, 176,661,928.73 and 69,278,157.33 is: 95,604,158.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,015,487.28 : 176,661,928.73 = 69,278,157.33 : x
  2. Step 2: Convert to fraction form
    128,015,487.28/176,661,928.73 = 69,278,157.33/x
  3. Step 3: Cross multiply
    128,015,487.28x = 176,661,928.73 × 69,278,157.33
  4. Step 4: Simplify right side
    128,015,487.28x = 12,238,812,892,288,900
  5. Step 5: Solve for x
    x = 12,238,812,892,288,900/128,015,487.28
  6. Step 6: Final answer
    x = 95,604,158.15

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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.