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Finding the Fourth Proportional to 121,889.96, 182,802.17 and 42,993.80

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Solution

The fourth proportional to 121,889.96, 182,802.17 and 42,993.80 is: 64,479.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,889.96 : 182,802.17 = 42,993.80 : x
  2. Step 2: Convert to fraction form
    121,889.96/182,802.17 = 42,993.80/x
  3. Step 3: Cross multiply
    121,889.96x = 182,802.17 × 42,993.80
  4. Step 4: Simplify right side
    121,889.96x = 7,859,359,130.02
  5. Step 5: Solve for x
    x = 7,859,359,130.02/121,889.96
  6. Step 6: Final answer
    x = 64,479.14

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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.