Home / 145,432.23-200,629.12-85,005.42

Finding the Fourth Proportional to 145,432.23, 200,629.12 and 85,005.42

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Solution

The fourth proportional to 145,432.23, 200,629.12 and 85,005.42 is: 117,268.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,432.23 : 200,629.12 = 85,005.42 : x
  2. Step 2: Convert to fraction form
    145,432.23/200,629.12 = 85,005.42/x
  3. Step 3: Cross multiply
    145,432.23x = 200,629.12 × 85,005.42
  4. Step 4: Simplify right side
    145,432.23x = 17,054,562,609.83
  5. Step 5: Solve for x
    x = 17,054,562,609.83/145,432.23
  6. Step 6: Final answer
    x = 117,268.11

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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.