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Finding the Fourth Proportional to 145,920.42, 201,339.42 and 88,589.88

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Solution

The fourth proportional to 145,920.42, 201,339.42 and 88,589.88 is: 122,235.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,920.42 : 201,339.42 = 88,589.88 : x
  2. Step 2: Convert to fraction form
    145,920.42/201,339.42 = 88,589.88/x
  3. Step 3: Cross multiply
    145,920.42x = 201,339.42 × 88,589.88
  4. Step 4: Simplify right side
    145,920.42x = 17,836,635,057.07
  5. Step 5: Solve for x
    x = 17,836,635,057.07/145,920.42
  6. Step 6: Final answer
    x = 122,235.36

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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.