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Finding the Fourth Proportional to 121,894.47, 168,250.47 and 70,930.23

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Solution

The fourth proportional to 121,894.47, 168,250.47 and 70,930.23 is: 97,904.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,894.47 : 168,250.47 = 70,930.23 : x
  2. Step 2: Convert to fraction form
    121,894.47/168,250.47 = 70,930.23/x
  3. Step 3: Cross multiply
    121,894.47x = 168,250.47 × 70,930.23
  4. Step 4: Simplify right side
    121,894.47x = 11,934,044,534.71
  5. Step 5: Solve for x
    x = 11,934,044,534.71/121,894.47
  6. Step 6: Final answer
    x = 97,904.72

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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.