Home / 121,911.84-168,272.15-70,934.42

Finding the Fourth Proportional to 121,911.84, 168,272.15 and 70,934.42

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Solution

The fourth proportional to 121,911.84, 168,272.15 and 70,934.42 is: 97,909.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,911.84 : 168,272.15 = 70,934.42 : x
  2. Step 2: Convert to fraction form
    121,911.84/168,272.15 = 70,934.42/x
  3. Step 3: Cross multiply
    121,911.84x = 168,272.15 × 70,934.42
  4. Step 4: Simplify right side
    121,911.84x = 11,936,287,362.40
  5. Step 5: Solve for x
    x = 11,936,287,362.40/121,911.84
  6. Step 6: Final answer
    x = 97,909.17

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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.