Home / 136,488.33-188,253.64-90,464.74

Finding the Fourth Proportional to 136,488.33, 188,253.64 and 90,464.74

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Solution

The fourth proportional to 136,488.33, 188,253.64 and 90,464.74 is: 124,774.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,488.33 : 188,253.64 = 90,464.74 : x
  2. Step 2: Convert to fraction form
    136,488.33/188,253.64 = 90,464.74/x
  3. Step 3: Cross multiply
    136,488.33x = 188,253.64 × 90,464.74
  4. Step 4: Simplify right side
    136,488.33x = 17,030,316,945.05
  5. Step 5: Solve for x
    x = 17,030,316,945.05/136,488.33
  6. Step 6: Final answer
    x = 124,774.89

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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.