Home / 121,239.14-167,386.61-89,352.50

Finding the Fourth Proportional to 121,239.14, 167,386.61 and 89,352.50

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Solution

The fourth proportional to 121,239.14, 167,386.61 and 89,352.50 is: 123,362.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,239.14 : 167,386.61 = 89,352.50 : x
  2. Step 2: Convert to fraction form
    121,239.14/167,386.61 = 89,352.50/x
  3. Step 3: Cross multiply
    121,239.14x = 167,386.61 × 89,352.50
  4. Step 4: Simplify right side
    121,239.14x = 14,956,411,456.47
  5. Step 5: Solve for x
    x = 14,956,411,456.47/121,239.14
  6. Step 6: Final answer
    x = 123,362.90

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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.