Home / 105,343.96-145,339.05-59,989.79

Finding the Fourth Proportional to 105,343.96, 145,339.05 and 59,989.79

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Solution

The fourth proportional to 105,343.96, 145,339.05 and 59,989.79 is: 82,765.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,343.96 : 145,339.05 = 59,989.79 : x
  2. Step 2: Convert to fraction form
    105,343.96/145,339.05 = 59,989.79/x
  3. Step 3: Cross multiply
    105,343.96x = 145,339.05 × 59,989.79
  4. Step 4: Simplify right side
    105,343.96x = 8,718,859,088.30
  5. Step 5: Solve for x
    x = 8,718,859,088.30/105,343.96
  6. Step 6: Final answer
    x = 82,765.63

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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.