Home / 121,102.65-181,595.66-42,215.13

Finding the Fourth Proportional to 121,102.65, 181,595.66 and 42,215.13

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Solution

The fourth proportional to 121,102.65, 181,595.66 and 42,215.13 is: 63,302.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,102.65 : 181,595.66 = 42,215.13 : x
  2. Step 2: Convert to fraction form
    121,102.65/181,595.66 = 42,215.13/x
  3. Step 3: Cross multiply
    121,102.65x = 181,595.66 × 42,215.13
  4. Step 4: Simplify right side
    121,102.65x = 7,666,084,183.26
  5. Step 5: Solve for x
    x = 7,666,084,183.26/121,102.65
  6. Step 6: Final answer
    x = 63,302.37

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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.