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Finding the Fourth Proportional to 145,730.01, 218,505.97 and 69,851.77

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Solution

The fourth proportional to 145,730.01, 218,505.97 and 69,851.77 is: 104,734.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,730.01 : 218,505.97 = 69,851.77 : x
  2. Step 2: Convert to fraction form
    145,730.01/218,505.97 = 69,851.77/x
  3. Step 3: Cross multiply
    145,730.01x = 218,505.97 × 69,851.77
  4. Step 4: Simplify right side
    145,730.01x = 15,263,028,760.07
  5. Step 5: Solve for x
    x = 15,263,028,760.07/145,730.01
  6. Step 6: Final answer
    x = 104,734.97

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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.