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Finding the Fourth Proportional to 103,809.77, 143,257.47 and 56,063.11

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Solution

The fourth proportional to 103,809.77, 143,257.47 and 56,063.11 is: 77,367.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,809.77 : 143,257.47 = 56,063.11 : x
  2. Step 2: Convert to fraction form
    103,809.77/143,257.47 = 56,063.11/x
  3. Step 3: Cross multiply
    103,809.77x = 143,257.47 × 56,063.11
  4. Step 4: Simplify right side
    103,809.77x = 8,031,459,298.93
  5. Step 5: Solve for x
    x = 8,031,459,298.93/103,809.77
  6. Step 6: Final answer
    x = 77,367.08

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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.