Home / 138,135.34-190,613.40-77,726.89

Finding the Fourth Proportional to 138,135.34, 190,613.40 and 77,726.89

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Solution

The fourth proportional to 138,135.34, 190,613.40 and 77,726.89 is: 107,255.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,135.34 : 190,613.40 = 77,726.89 : x
  2. Step 2: Convert to fraction form
    138,135.34/190,613.40 = 77,726.89/x
  3. Step 3: Cross multiply
    138,135.34x = 190,613.40 × 77,726.89
  4. Step 4: Simplify right side
    138,135.34x = 14,815,785,821.26
  5. Step 5: Solve for x
    x = 14,815,785,821.26/138,135.34
  6. Step 6: Final answer
    x = 107,255.58

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1.5x scale

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.