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Finding the Fourth Proportional to 121,212.40, 181,672.80 and 62,017.60

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Solution

The fourth proportional to 121,212.40, 181,672.80 and 62,017.60 is: 92,951.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,212.40 : 181,672.80 = 62,017.60 : x
  2. Step 2: Convert to fraction form
    121,212.40/181,672.80 = 62,017.60/x
  3. Step 3: Cross multiply
    121,212.40x = 181,672.80 × 62,017.60
  4. Step 4: Simplify right side
    121,212.40x = 11,266,911,041.28
  5. Step 5: Solve for x
    x = 11,266,911,041.28/121,212.40
  6. Step 6: Final answer
    x = 92,951.80

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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.