Home / 121,128.96-181,717.74-42,222

Finding the Fourth Proportional to 121,128.96, 181,717.74 and 42,222

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Solution

The fourth proportional to 121,128.96, 181,717.74 and 42,222 is: 63,341.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,128.96 : 181,717.74 = 42,222 : x
  2. Step 2: Convert to fraction form
    121,128.96/181,717.74 = 42,222/x
  3. Step 3: Cross multiply
    121,128.96x = 181,717.74 × 42,222
  4. Step 4: Simplify right side
    121,128.96x = 7,672,486,418.28
  5. Step 5: Solve for x
    x = 7,672,486,418.28/121,128.96
  6. Step 6: Final answer
    x = 63,341.47

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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.