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Finding the Fourth Proportional to 103,809.58, 143,257.21 and 56,062.92

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Solution

The fourth proportional to 103,809.58, 143,257.21 and 56,062.92 is: 77,366.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,809.58 : 143,257.21 = 56,062.92 : x
  2. Step 2: Convert to fraction form
    103,809.58/143,257.21 = 56,062.92/x
  3. Step 3: Cross multiply
    103,809.58x = 143,257.21 × 56,062.92
  4. Step 4: Simplify right side
    103,809.58x = 8,031,417,503.65
  5. Step 5: Solve for x
    x = 8,031,417,503.65/103,809.58
  6. Step 6: Final answer
    x = 77,366.82

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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.