Home / 121,186.51-181,695.44-53,681.90

Finding the Fourth Proportional to 121,186.51, 181,695.44 and 53,681.90

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Solution

The fourth proportional to 121,186.51, 181,695.44 and 53,681.90 is: 80,485.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,186.51 : 181,695.44 = 53,681.90 : x
  2. Step 2: Convert to fraction form
    121,186.51/181,695.44 = 53,681.90/x
  3. Step 3: Cross multiply
    121,186.51x = 181,695.44 × 53,681.90
  4. Step 4: Simplify right side
    121,186.51x = 9,753,755,666.26
  5. Step 5: Solve for x
    x = 9,753,755,666.26/121,186.51
  6. Step 6: Final answer
    x = 80,485.49

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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.