Home / 133,137.18-183,685.05-87,837.66

Finding the Fourth Proportional to 133,137.18, 183,685.05 and 87,837.66

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Solution

The fourth proportional to 133,137.18, 183,685.05 and 87,837.66 is: 121,186.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,137.18 : 183,685.05 = 87,837.66 : x
  2. Step 2: Convert to fraction form
    133,137.18/183,685.05 = 87,837.66/x
  3. Step 3: Cross multiply
    133,137.18x = 183,685.05 × 87,837.66
  4. Step 4: Simplify right side
    133,137.18x = 16,134,464,968.98
  5. Step 5: Solve for x
    x = 16,134,464,968.98/133,137.18
  6. Step 6: Final answer
    x = 121,186.77

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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.