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Finding the Fourth Proportional to 145,980.77, 201,472.79 and 85,575.15

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Solution

The fourth proportional to 145,980.77, 201,472.79 and 85,575.15 is: 118,105.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,980.77 : 201,472.79 = 85,575.15 : x
  2. Step 2: Convert to fraction form
    145,980.77/201,472.79 = 85,575.15/x
  3. Step 3: Cross multiply
    145,980.77x = 201,472.79 × 85,575.15
  4. Step 4: Simplify right side
    145,980.77x = 17,241,063,797.29
  5. Step 5: Solve for x
    x = 17,241,063,797.29/145,980.77
  6. Step 6: Final answer
    x = 118,105.04

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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.