Home / 145,629.10-200,967.72-81,966.92

Finding the Fourth Proportional to 145,629.10, 200,967.72 and 81,966.92

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Solution

The fourth proportional to 145,629.10, 200,967.72 and 81,966.92 is: 113,114.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,629.10 : 200,967.72 = 81,966.92 : x
  2. Step 2: Convert to fraction form
    145,629.10/200,967.72 = 81,966.92/x
  3. Step 3: Cross multiply
    145,629.10x = 200,967.72 × 81,966.92
  4. Step 4: Simplify right side
    145,629.10x = 16,472,705,027.82
  5. Step 5: Solve for x
    x = 16,472,705,027.82/145,629.10
  6. Step 6: Final answer
    x = 113,114.10

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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.