Home / 121,225.74-167,291.10-67,511.40

Finding the Fourth Proportional to 121,225.74, 167,291.10 and 67,511.40

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Solution

The fourth proportional to 121,225.74, 167,291.10 and 67,511.40 is: 93,165.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,225.74 : 167,291.10 = 67,511.40 : x
  2. Step 2: Convert to fraction form
    121,225.74/167,291.10 = 67,511.40/x
  3. Step 3: Cross multiply
    121,225.74x = 167,291.10 × 67,511.40
  4. Step 4: Simplify right side
    121,225.74x = 11,294,056,368.54
  5. Step 5: Solve for x
    x = 11,294,056,368.54/121,225.74
  6. Step 6: Final answer
    x = 93,165.50

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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.