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Finding the Fourth Proportional to 121,152.70, 181,729.05 and 61,968.70

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Solution

The fourth proportional to 121,152.70, 181,729.05 and 61,968.70 is: 92,953.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,152.70 : 181,729.05 = 61,968.70 : x
  2. Step 2: Convert to fraction form
    121,152.70/181,729.05 = 61,968.70/x
  3. Step 3: Cross multiply
    121,152.70x = 181,729.05 × 61,968.70
  4. Step 4: Simplify right side
    121,152.70x = 11,261,512,980.74
  5. Step 5: Solve for x
    x = 11,261,512,980.74/121,152.70
  6. Step 6: Final answer
    x = 92,953.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.