Home / 145,432.74-200,629.80-85,005.92

Finding the Fourth Proportional to 145,432.74, 200,629.80 and 85,005.92

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Solution

The fourth proportional to 145,432.74, 200,629.80 and 85,005.92 is: 117,268.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,432.74 : 200,629.80 = 85,005.92 : x
  2. Step 2: Convert to fraction form
    145,432.74/200,629.80 = 85,005.92/x
  3. Step 3: Cross multiply
    145,432.74x = 200,629.80 × 85,005.92
  4. Step 4: Simplify right side
    145,432.74x = 17,054,720,728.42
  5. Step 5: Solve for x
    x = 17,054,720,728.42/145,432.74
  6. Step 6: Final answer
    x = 117,268.79

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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.