Home / 103,905.45-143,388.63-56,158.38

Finding the Fourth Proportional to 103,905.45, 143,388.63 and 56,158.38

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Solution

The fourth proportional to 103,905.45, 143,388.63 and 56,158.38 is: 77,498.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,905.45 : 143,388.63 = 56,158.38 : x
  2. Step 2: Convert to fraction form
    103,905.45/143,388.63 = 56,158.38/x
  3. Step 3: Cross multiply
    103,905.45x = 143,388.63 × 56,158.38
  4. Step 4: Simplify right side
    103,905.45x = 8,052,473,171.22
  5. Step 5: Solve for x
    x = 8,052,473,171.22/103,905.45
  6. Step 6: Final answer
    x = 77,498.08

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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.