Home / 128,159,213.56-176,856,090.92-75,235,071.08

Finding the Fourth Proportional to 128,159,213.56, 176,856,090.92 and 75,235,071.08

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Solution

The fourth proportional to 128,159,213.56, 176,856,090.92 and 75,235,071.08 is: 103,822,270.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,159,213.56 : 176,856,090.92 = 75,235,071.08 : x
  2. Step 2: Convert to fraction form
    128,159,213.56/176,856,090.92 = 75,235,071.08/x
  3. Step 3: Cross multiply
    128,159,213.56x = 176,856,090.92 × 75,235,071.08
  4. Step 4: Simplify right side
    128,159,213.56x = 13,305,780,571,297,142
  5. Step 5: Solve for x
    x = 13,305,780,571,297,142/128,159,213.56
  6. Step 6: Final answer
    x = 103,822,270.77

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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.