Home / 136,489.08-188,254.67-90,465.49

Finding the Fourth Proportional to 136,489.08, 188,254.67 and 90,465.49

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Solution

The fourth proportional to 136,489.08, 188,254.67 and 90,465.49 is: 124,775.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,489.08 : 188,254.67 = 90,465.49 : x
  2. Step 2: Convert to fraction form
    136,489.08/188,254.67 = 90,465.49/x
  3. Step 3: Cross multiply
    136,489.08x = 188,254.67 × 90,465.49
  4. Step 4: Simplify right side
    136,489.08x = 17,030,550,721.87
  5. Step 5: Solve for x
    x = 17,030,550,721.87/136,489.08
  6. Step 6: Final answer
    x = 124,775.92

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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.