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Finding the Fourth Proportional to 145,980.83, 201,456.17 and 85,568.60

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Solution

The fourth proportional to 145,980.83, 201,456.17 and 85,568.60 is: 118,086.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,980.83 : 201,456.17 = 85,568.60 : x
  2. Step 2: Convert to fraction form
    145,980.83/201,456.17 = 85,568.60/x
  3. Step 3: Cross multiply
    145,980.83x = 201,456.17 × 85,568.60
  4. Step 4: Simplify right side
    145,980.83x = 17,238,322,428.26
  5. Step 5: Solve for x
    x = 17,238,322,428.26/145,980.83
  6. Step 6: Final answer
    x = 118,086.21

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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.