Home / 120,868.79-181,131.27-89,028.47

Finding the Fourth Proportional to 120,868.79, 181,131.27 and 89,028.47

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Solution

The fourth proportional to 120,868.79, 181,131.27 and 89,028.47 is: 133,416.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,868.79 : 181,131.27 = 89,028.47 : x
  2. Step 2: Convert to fraction form
    120,868.79/181,131.27 = 89,028.47/x
  3. Step 3: Cross multiply
    120,868.79x = 181,131.27 × 89,028.47
  4. Step 4: Simplify right side
    120,868.79x = 16,125,838,931.60
  5. Step 5: Solve for x
    x = 16,125,838,931.60/120,868.79
  6. Step 6: Final answer
    x = 133,416.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.