Home / 121,582.24-167,780-67,866.11

Finding the Fourth Proportional to 121,582.24, 167,780 and 67,866.11

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Solution

The fourth proportional to 121,582.24, 167,780 and 67,866.11 is: 93,653.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,582.24 : 167,780 = 67,866.11 : x
  2. Step 2: Convert to fraction form
    121,582.24/167,780 = 67,866.11/x
  3. Step 3: Cross multiply
    121,582.24x = 167,780 × 67,866.11
  4. Step 4: Simplify right side
    121,582.24x = 11,386,575,935.80
  5. Step 5: Solve for x
    x = 11,386,575,935.80/121,582.24
  6. Step 6: Final answer
    x = 93,653.28

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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.