Home / 133,139.68-183,688.50-87,840.16

Finding the Fourth Proportional to 133,139.68, 183,688.50 and 87,840.16

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Solution

The fourth proportional to 133,139.68, 183,688.50 and 87,840.16 is: 121,190.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,139.68 : 183,688.50 = 87,840.16 : x
  2. Step 2: Convert to fraction form
    133,139.68/183,688.50 = 87,840.16/x
  3. Step 3: Cross multiply
    133,139.68x = 183,688.50 × 87,840.16
  4. Step 4: Simplify right side
    133,139.68x = 16,135,227,230.16
  5. Step 5: Solve for x
    x = 16,135,227,230.16/133,139.68
  6. Step 6: Final answer
    x = 121,190.22

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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.