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Finding the Fourth Proportional to 121,915.52, 168,277.22 and 70,938.08

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Solution

The fourth proportional to 121,915.52, 168,277.22 and 70,938.08 is: 97,914.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,915.52 : 168,277.22 = 70,938.08 : x
  2. Step 2: Convert to fraction form
    121,915.52/168,277.22 = 70,938.08/x
  3. Step 3: Cross multiply
    121,915.52x = 168,277.22 × 70,938.08
  4. Step 4: Simplify right side
    121,915.52x = 11,937,262,894.54
  5. Step 5: Solve for x
    x = 11,937,262,894.54/121,915.52
  6. Step 6: Final answer
    x = 97,914.22

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1.5x scale

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.