Home / 103,631.75-143,011.82-58,919.75

Finding the Fourth Proportional to 103,631.75, 143,011.82 and 58,919.75

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Solution

The fourth proportional to 103,631.75, 143,011.82 and 58,919.75 is: 81,309.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,631.75 : 143,011.82 = 58,919.75 : x
  2. Step 2: Convert to fraction form
    103,631.75/143,011.82 = 58,919.75/x
  3. Step 3: Cross multiply
    103,631.75x = 143,011.82 × 58,919.75
  4. Step 4: Simplify right side
    103,631.75x = 8,426,220,681.45
  5. Step 5: Solve for x
    x = 8,426,220,681.45/103,631.75
  6. Step 6: Final answer
    x = 81,309.26

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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.