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Finding the Fourth Proportional to 121,421.55, 182,132.33 and 121,421.55

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Solution

The fourth proportional to 121,421.55, 182,132.33 and 121,421.55 is: 182,132.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,421.55 : 182,132.33 = 121,421.55 : x
  2. Step 2: Convert to fraction form
    121,421.55/182,132.33 = 121,421.55/x
  3. Step 3: Cross multiply
    121,421.55x = 182,132.33 × 121,421.55
  4. Step 4: Simplify right side
    121,421.55x = 22,114,789,206.60
  5. Step 5: Solve for x
    x = 22,114,789,206.60/121,421.55
  6. Step 6: Final answer
    x = 182,132.33

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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.