Home / 145,809.72-201,214.80-82,146.15

Finding the Fourth Proportional to 145,809.72, 201,214.80 and 82,146.15

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Solution

The fourth proportional to 145,809.72, 201,214.80 and 82,146.15 is: 113,360.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,809.72 : 201,214.80 = 82,146.15 : x
  2. Step 2: Convert to fraction form
    145,809.72/201,214.80 = 82,146.15/x
  3. Step 3: Cross multiply
    145,809.72x = 201,214.80 × 82,146.15
  4. Step 4: Simplify right side
    145,809.72x = 16,529,021,143.02
  5. Step 5: Solve for x
    x = 16,529,021,143.02/145,809.72
  6. Step 6: Final answer
    x = 113,360.21

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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.