Home / 121,988.09-168,311.52-70,292.48

Finding the Fourth Proportional to 121,988.09, 168,311.52 and 70,292.48

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Solution

The fourth proportional to 121,988.09, 168,311.52 and 70,292.48 is: 96,985.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,988.09 : 168,311.52 = 70,292.48 : x
  2. Step 2: Convert to fraction form
    121,988.09/168,311.52 = 70,292.48/x
  3. Step 3: Cross multiply
    121,988.09x = 168,311.52 × 70,292.48
  4. Step 4: Simplify right side
    121,988.09x = 11,831,033,311.81
  5. Step 5: Solve for x
    x = 11,831,033,311.81/121,988.09
  6. Step 6: Final answer
    x = 96,985.15

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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.