Home / 121,281.14-181,700.02-87,918.45

Finding the Fourth Proportional to 121,281.14, 181,700.02 and 87,918.45

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Solution

The fourth proportional to 121,281.14, 181,700.02 and 87,918.45 is: 131,716.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,281.14 : 181,700.02 = 87,918.45 : x
  2. Step 2: Convert to fraction form
    121,281.14/181,700.02 = 87,918.45/x
  3. Step 3: Cross multiply
    121,281.14x = 181,700.02 × 87,918.45
  4. Step 4: Simplify right side
    121,281.14x = 15,974,784,123.37
  5. Step 5: Solve for x
    x = 15,974,784,123.37/121,281.14
  6. Step 6: Final answer
    x = 131,716.97

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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.