Home / 216,701.65-299,032.03-121,189.89

Finding the Fourth Proportional to 216,701.65, 299,032.03 and 121,189.89

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Solution

The fourth proportional to 216,701.65, 299,032.03 and 121,189.89 is: 167,232.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,701.65 : 299,032.03 = 121,189.89 : x
  2. Step 2: Convert to fraction form
    216,701.65/299,032.03 = 121,189.89/x
  3. Step 3: Cross multiply
    216,701.65x = 299,032.03 × 121,189.89
  4. Step 4: Simplify right side
    216,701.65x = 36,239,658,822.18
  5. Step 5: Solve for x
    x = 36,239,658,822.18/216,701.65
  6. Step 6: Final answer
    x = 167,232.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.