Home / 145,165.79-200,323.62-81,506.27

Finding the Fourth Proportional to 145,165.79, 200,323.62 and 81,506.27

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Solution

The fourth proportional to 145,165.79, 200,323.62 and 81,506.27 is: 112,475.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,165.79 : 200,323.62 = 81,506.27 : x
  2. Step 2: Convert to fraction form
    145,165.79/200,323.62 = 81,506.27/x
  3. Step 3: Cross multiply
    145,165.79x = 200,323.62 × 81,506.27
  4. Step 4: Simplify right side
    145,165.79x = 16,327,630,057.48
  5. Step 5: Solve for x
    x = 16,327,630,057.48/145,165.79
  6. Step 6: Final answer
    x = 112,475.75

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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.