Home / 137,900.21-190,304.87-76,652.15

Finding the Fourth Proportional to 137,900.21, 190,304.87 and 76,652.15

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Solution

The fourth proportional to 137,900.21, 190,304.87 and 76,652.15 is: 105,781.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,900.21 : 190,304.87 = 76,652.15 : x
  2. Step 2: Convert to fraction form
    137,900.21/190,304.87 = 76,652.15/x
  3. Step 3: Cross multiply
    137,900.21x = 190,304.87 × 76,652.15
  4. Step 4: Simplify right side
    137,900.21x = 14,587,276,106.19
  5. Step 5: Solve for x
    x = 14,587,276,106.19/137,900.21
  6. Step 6: Final answer
    x = 105,781.40

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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.