Home / 138,649.44-191,336.34-74,987.16

Finding the Fourth Proportional to 138,649.44, 191,336.34 and 74,987.16

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Solution

The fourth proportional to 138,649.44, 191,336.34 and 74,987.16 is: 103,482.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,649.44 : 191,336.34 = 74,987.16 : x
  2. Step 2: Convert to fraction form
    138,649.44/191,336.34 = 74,987.16/x
  3. Step 3: Cross multiply
    138,649.44x = 191,336.34 × 74,987.16
  4. Step 4: Simplify right side
    138,649.44x = 14,347,768,741.39
  5. Step 5: Solve for x
    x = 14,347,768,741.39/138,649.44
  6. Step 6: Final answer
    x = 103,482.34

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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.