Home / 128,247.31-176,975.81-70,883.69

Finding the Fourth Proportional to 128,247.31, 176,975.81 and 70,883.69

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Solution

The fourth proportional to 128,247.31, 176,975.81 and 70,883.69 is: 97,816.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,247.31 : 176,975.81 = 70,883.69 : x
  2. Step 2: Convert to fraction form
    128,247.31/176,975.81 = 70,883.69/x
  3. Step 3: Cross multiply
    128,247.31x = 176,975.81 × 70,883.69
  4. Step 4: Simplify right side
    128,247.31x = 12,544,698,541.56
  5. Step 5: Solve for x
    x = 12,544,698,541.56/128,247.31
  6. Step 6: Final answer
    x = 97,816.47

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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.