Home / 138,635,803.20-208,401,602.40-127,886,260.80

Finding the Fourth Proportional to 138,635,803.20, 208,401,602.40 and 127,886,260.80

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Solution

The fourth proportional to 138,635,803.20, 208,401,602.40 and 127,886,260.80 is: 192,242,559.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,635,803.20 : 208,401,602.40 = 127,886,260.80 : x
  2. Step 2: Convert to fraction form
    138,635,803.20/208,401,602.40 = 127,886,260.80/x
  3. Step 3: Cross multiply
    138,635,803.20x = 208,401,602.40 × 127,886,260.80
  4. Step 4: Simplify right side
    138,635,803.20x = 26,651,701,675,664,308
  5. Step 5: Solve for x
    x = 26,651,701,675,664,308/138,635,803.20
  6. Step 6: Final answer
    x = 192,242,559.72

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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.