Home / 121,988.35-168,311.85-70,292.74

Finding the Fourth Proportional to 121,988.35, 168,311.85 and 70,292.74

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Solution

The fourth proportional to 121,988.35, 168,311.85 and 70,292.74 is: 96,985.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,988.35 : 168,311.85 = 70,292.74 : x
  2. Step 2: Convert to fraction form
    121,988.35/168,311.85 = 70,292.74/x
  3. Step 3: Cross multiply
    121,988.35x = 168,311.85 × 70,292.74
  4. Step 4: Simplify right side
    121,988.35x = 11,831,101,110.97
  5. Step 5: Solve for x
    x = 11,831,101,110.97/121,988.35
  6. Step 6: Final answer
    x = 96,985.50

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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.