Home / 105,206.43-145,180.80-59,265.15

Finding the Fourth Proportional to 105,206.43, 145,180.80 and 59,265.15

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Solution

The fourth proportional to 105,206.43, 145,180.80 and 59,265.15 is: 81,783.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,206.43 : 145,180.80 = 59,265.15 : x
  2. Step 2: Convert to fraction form
    105,206.43/145,180.80 = 59,265.15/x
  3. Step 3: Cross multiply
    105,206.43x = 145,180.80 × 59,265.15
  4. Step 4: Simplify right side
    105,206.43x = 8,604,161,889.12
  5. Step 5: Solve for x
    x = 8,604,161,889.12/105,206.43
  6. Step 6: Final answer
    x = 81,783.61

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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.