Home / 105,909.32-146,155.90-58,163.68

Finding the Fourth Proportional to 105,909.32, 146,155.90 and 58,163.68

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Solution

The fourth proportional to 105,909.32, 146,155.90 and 58,163.68 is: 80,266.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,909.32 : 146,155.90 = 58,163.68 : x
  2. Step 2: Convert to fraction form
    105,909.32/146,155.90 = 58,163.68/x
  3. Step 3: Cross multiply
    105,909.32x = 146,155.90 × 58,163.68
  4. Step 4: Simplify right side
    105,909.32x = 8,500,964,997.71
  5. Step 5: Solve for x
    x = 8,500,964,997.71/105,909.32
  6. Step 6: Final answer
    x = 80,266.45

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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.