Home / 103,905.68-143,389.50-56,158.88

Finding the Fourth Proportional to 103,905.68, 143,389.50 and 56,158.88

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Solution

The fourth proportional to 103,905.68, 143,389.50 and 56,158.88 is: 77,499.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,905.68 : 143,389.50 = 56,158.88 : x
  2. Step 2: Convert to fraction form
    103,905.68/143,389.50 = 56,158.88/x
  3. Step 3: Cross multiply
    103,905.68x = 143,389.50 × 56,158.88
  4. Step 4: Simplify right side
    103,905.68x = 8,052,593,723.76
  5. Step 5: Solve for x
    x = 8,052,593,723.76/103,905.68
  6. Step 6: Final answer
    x = 77,499.07

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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.