Home / 121,904.05-168,159.86-70,911.04

Finding the Fourth Proportional to 121,904.05, 168,159.86 and 70,911.04

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Solution

The fourth proportional to 121,904.05, 168,159.86 and 70,911.04 is: 97,817.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,904.05 : 168,159.86 = 70,911.04 : x
  2. Step 2: Convert to fraction form
    121,904.05/168,159.86 = 70,911.04/x
  3. Step 3: Cross multiply
    121,904.05x = 168,159.86 × 70,911.04
  4. Step 4: Simplify right side
    121,904.05x = 11,924,389,718.06
  5. Step 5: Solve for x
    x = 11,924,389,718.06/121,904.05
  6. Step 6: Final answer
    x = 97,817.83

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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.