Home / 153,869.76-212,338.67-90,195.26

Finding the Fourth Proportional to 153,869.76, 212,338.67 and 90,195.26

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Solution

The fourth proportional to 153,869.76, 212,338.67 and 90,195.26 is: 124,468.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,869.76 : 212,338.67 = 90,195.26 : x
  2. Step 2: Convert to fraction form
    153,869.76/212,338.67 = 90,195.26/x
  3. Step 3: Cross multiply
    153,869.76x = 212,338.67 × 90,195.26
  4. Step 4: Simplify right side
    153,869.76x = 19,151,940,036.03
  5. Step 5: Solve for x
    x = 19,151,940,036.03/153,869.76
  6. Step 6: Final answer
    x = 124,468.51

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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.