Home / 121,109.60-181,611.45-61,101.16

Finding the Fourth Proportional to 121,109.60, 181,611.45 and 61,101.16

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Solution

The fourth proportional to 121,109.60, 181,611.45 and 61,101.16 is: 91,625.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,109.60 : 181,611.45 = 61,101.16 : x
  2. Step 2: Convert to fraction form
    121,109.60/181,611.45 = 61,101.16/x
  3. Step 3: Cross multiply
    121,109.60x = 181,611.45 × 61,101.16
  4. Step 4: Simplify right side
    121,109.60x = 11,096,669,810.25
  5. Step 5: Solve for x
    x = 11,096,669,810.25/121,109.60
  6. Step 6: Final answer
    x = 91,625.02

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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.