Home / 103,989.45-143,505.34-56,242.69

Finding the Fourth Proportional to 103,989.45, 143,505.34 and 56,242.69

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Solution

The fourth proportional to 103,989.45, 143,505.34 and 56,242.69 is: 77,614.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,989.45 : 143,505.34 = 56,242.69 : x
  2. Step 2: Convert to fraction form
    103,989.45/143,505.34 = 56,242.69/x
  3. Step 3: Cross multiply
    103,989.45x = 143,505.34 × 56,242.69
  4. Step 4: Simplify right side
    103,989.45x = 8,071,125,851.59
  5. Step 5: Solve for x
    x = 8,071,125,851.59/103,989.45
  6. Step 6: Final answer
    x = 77,614.85

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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.