Home / 123,161.51-169,730.64-89,112.35

Finding the Fourth Proportional to 123,161.51, 169,730.64 and 89,112.35

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Solution

The fourth proportional to 123,161.51, 169,730.64 and 89,112.35 is: 122,807.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,161.51 : 169,730.64 = 89,112.35 : x
  2. Step 2: Convert to fraction form
    123,161.51/169,730.64 = 89,112.35/x
  3. Step 3: Cross multiply
    123,161.51x = 169,730.64 × 89,112.35
  4. Step 4: Simplify right side
    123,161.51x = 15,125,096,621.73
  5. Step 5: Solve for x
    x = 15,125,096,621.73/123,161.51
  6. Step 6: Final answer
    x = 122,807.01

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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.