Home / 145,091.07-200,245.23-81,432.36

Finding the Fourth Proportional to 145,091.07, 200,245.23 and 81,432.36

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Solution

The fourth proportional to 145,091.07, 200,245.23 and 81,432.36 is: 112,387.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,091.07 : 200,245.23 = 81,432.36 : x
  2. Step 2: Convert to fraction form
    145,091.07/200,245.23 = 81,432.36/x
  3. Step 3: Cross multiply
    145,091.07x = 200,245.23 × 81,432.36
  4. Step 4: Simplify right side
    145,091.07x = 16,306,441,657.64
  5. Step 5: Solve for x
    x = 16,306,441,657.64/145,091.07
  6. Step 6: Final answer
    x = 112,387.63

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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.