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Finding the Fourth Proportional to 104,649.82, 144,415.76 and 56,903.20

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Solution

The fourth proportional to 104,649.82, 144,415.76 and 56,903.20 is: 78,525.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,649.82 : 144,415.76 = 56,903.20 : x
  2. Step 2: Convert to fraction form
    104,649.82/144,415.76 = 56,903.20/x
  3. Step 3: Cross multiply
    104,649.82x = 144,415.76 × 56,903.20
  4. Step 4: Simplify right side
    104,649.82x = 8,217,718,228.88
  5. Step 5: Solve for x
    x = 8,217,718,228.88/104,649.82
  6. Step 6: Final answer
    x = 78,525.87

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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.