Home / 128,332,255.36-177,106,002.72-72,582,618.22

Finding the Fourth Proportional to 128,332,255.36, 177,106,002.72 and 72,582,618.22

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Solution

The fourth proportional to 128,332,255.36, 177,106,002.72 and 72,582,618.22 is: 100,168,249.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,332,255.36 : 177,106,002.72 = 72,582,618.22 : x
  2. Step 2: Convert to fraction form
    128,332,255.36/177,106,002.72 = 72,582,618.22/x
  3. Step 3: Cross multiply
    128,332,255.36x = 177,106,002.72 × 72,582,618.22
  4. Step 4: Simplify right side
    128,332,255.36x = 12,854,817,379,896,042
  5. Step 5: Solve for x
    x = 12,854,817,379,896,042/128,332,255.36
  6. Step 6: Final answer
    x = 100,168,249.55

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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.