Home / 92,345.30-137,850.18-81,135.21

Finding the Fourth Proportional to 92,345.30, 137,850.18 and 81,135.21

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Solution

The fourth proportional to 92,345.30, 137,850.18 and 81,135.21 is: 121,116.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,345.30 : 137,850.18 = 81,135.21 : x
  2. Step 2: Convert to fraction form
    92,345.30/137,850.18 = 81,135.21/x
  3. Step 3: Cross multiply
    92,345.30x = 137,850.18 × 81,135.21
  4. Step 4: Simplify right side
    92,345.30x = 11,184,502,897.16
  5. Step 5: Solve for x
    x = 11,184,502,897.16/92,345.30
  6. Step 6: Final answer
    x = 121,116.11

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.