Home / 103,628.88-143,011.08-58,919.76

Finding the Fourth Proportional to 103,628.88, 143,011.08 and 58,919.76

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Solution

The fourth proportional to 103,628.88, 143,011.08 and 58,919.76 is: 81,311.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,628.88 : 143,011.08 = 58,919.76 : x
  2. Step 2: Convert to fraction form
    103,628.88/143,011.08 = 58,919.76/x
  3. Step 3: Cross multiply
    103,628.88x = 143,011.08 × 58,919.76
  4. Step 4: Simplify right side
    103,628.88x = 8,426,178,510.94
  5. Step 5: Solve for x
    x = 8,426,178,510.94/103,628.88
  6. Step 6: Final answer
    x = 81,311.10

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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.