Home / 128,382,990.72-177,168,527.21-73,380,028.20

Finding the Fourth Proportional to 128,382,990.72, 177,168,527.21 and 73,380,028.20

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Solution

The fourth proportional to 128,382,990.72, 177,168,527.21 and 73,380,028.20 is: 101,264,438.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,382,990.72 : 177,168,527.21 = 73,380,028.20 : x
  2. Step 2: Convert to fraction form
    128,382,990.72/177,168,527.21 = 73,380,028.20/x
  3. Step 3: Cross multiply
    128,382,990.72x = 177,168,527.21 × 73,380,028.20
  4. Step 4: Simplify right side
    128,382,990.72x = 13,000,631,522,822,268
  5. Step 5: Solve for x
    x = 13,000,631,522,822,268/128,382,990.72
  6. Step 6: Final answer
    x = 101,264,438.93

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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.