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Finding the Fourth Proportional to 145,655.12, 201,003.54 and 81,993.08

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Solution

The fourth proportional to 145,655.12, 201,003.54 and 81,993.08 is: 113,150.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,655.12 : 201,003.54 = 81,993.08 : x
  2. Step 2: Convert to fraction form
    145,655.12/201,003.54 = 81,993.08/x
  3. Step 3: Cross multiply
    145,655.12x = 201,003.54 × 81,993.08
  4. Step 4: Simplify right side
    145,655.12x = 16,480,899,335.50
  5. Step 5: Solve for x
    x = 16,480,899,335.50/145,655.12
  6. Step 6: Final answer
    x = 113,150.15

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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.