Home / 121,089.30-181,634.98-42,203.40

Finding the Fourth Proportional to 121,089.30, 181,634.98 and 42,203.40

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Solution

The fourth proportional to 121,089.30, 181,634.98 and 42,203.40 is: 63,305.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,089.30 : 181,634.98 = 42,203.40 : x
  2. Step 2: Convert to fraction form
    121,089.30/181,634.98 = 42,203.40/x
  3. Step 3: Cross multiply
    121,089.30x = 181,634.98 × 42,203.40
  4. Step 4: Simplify right side
    121,089.30x = 7,665,613,714.93
  5. Step 5: Solve for x
    x = 7,665,613,714.93/121,089.30
  6. Step 6: Final answer
    x = 63,305.46

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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.