Home / 128,431,967.16-177,236,235.90-73,428,975.48

Finding the Fourth Proportional to 128,431,967.16, 177,236,235.90 and 73,428,975.48

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Solution

The fourth proportional to 128,431,967.16, 177,236,235.90 and 73,428,975.48 is: 101,332,055.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,431,967.16 : 177,236,235.90 = 73,428,975.48 : x
  2. Step 2: Convert to fraction form
    128,431,967.16/177,236,235.90 = 73,428,975.48/x
  3. Step 3: Cross multiply
    128,431,967.16x = 177,236,235.90 × 73,428,975.48
  4. Step 4: Simplify right side
    128,431,967.16x = 13,014,275,220,068,596
  5. Step 5: Solve for x
    x = 13,014,275,220,068,596/128,431,967.16
  6. Step 6: Final answer
    x = 101,332,055.47

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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.