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Finding the Fourth Proportional to 159,903.40, 240,008.70 and 81,106.60

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Solution

The fourth proportional to 159,903.40, 240,008.70 and 81,106.60 is: 121,737.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,903.40 : 240,008.70 = 81,106.60 : x
  2. Step 2: Convert to fraction form
    159,903.40/240,008.70 = 81,106.60/x
  3. Step 3: Cross multiply
    159,903.40x = 240,008.70 × 81,106.60
  4. Step 4: Simplify right side
    159,903.40x = 19,466,289,627.42
  5. Step 5: Solve for x
    x = 19,466,289,627.42/159,903.40
  6. Step 6: Final answer
    x = 121,737.81

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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.