Home / 121,979.84-168,310.04-70,288.88

Finding the Fourth Proportional to 121,979.84, 168,310.04 and 70,288.88

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Solution

The fourth proportional to 121,979.84, 168,310.04 and 70,288.88 is: 96,985.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,979.84 : 168,310.04 = 70,288.88 : x
  2. Step 2: Convert to fraction form
    121,979.84/168,310.04 = 70,288.88/x
  3. Step 3: Cross multiply
    121,979.84x = 168,310.04 × 70,288.88
  4. Step 4: Simplify right side
    121,979.84x = 11,830,323,011.36
  5. Step 5: Solve for x
    x = 11,830,323,011.36/121,979.84
  6. Step 6: Final answer
    x = 96,985.89

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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.