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Finding the Fourth Proportional to 104,903.79, 144,765.37 and 57,157.47

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Solution

The fourth proportional to 104,903.79, 144,765.37 and 57,157.47 is: 78,876.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,903.79 : 144,765.37 = 57,157.47 : x
  2. Step 2: Convert to fraction form
    104,903.79/144,765.37 = 57,157.47/x
  3. Step 3: Cross multiply
    104,903.79x = 144,765.37 × 57,157.47
  4. Step 4: Simplify right side
    104,903.79x = 8,274,422,292.81
  5. Step 5: Solve for x
    x = 8,274,422,292.81/104,903.79
  6. Step 6: Final answer
    x = 78,876.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.