Home / 121,328.28-181,877.22-42,391.08

Finding the Fourth Proportional to 121,328.28, 181,877.22 and 42,391.08

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Solution

The fourth proportional to 121,328.28, 181,877.22 and 42,391.08 is: 63,546.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,328.28 : 181,877.22 = 42,391.08 : x
  2. Step 2: Convert to fraction form
    121,328.28/181,877.22 = 42,391.08/x
  3. Step 3: Cross multiply
    121,328.28x = 181,877.22 × 42,391.08
  4. Step 4: Simplify right side
    121,328.28x = 7,709,971,783.20
  5. Step 5: Solve for x
    x = 7,709,971,783.20/121,328.28
  6. Step 6: Final answer
    x = 63,546.37

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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.