Home / 100,765.28-139,053.84-58,322.96

Finding the Fourth Proportional to 100,765.28, 139,053.84 and 58,322.96

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Solution

The fourth proportional to 100,765.28, 139,053.84 and 58,322.96 is: 80,484.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,765.28 : 139,053.84 = 58,322.96 : x
  2. Step 2: Convert to fraction form
    100,765.28/139,053.84 = 58,322.96/x
  3. Step 3: Cross multiply
    100,765.28x = 139,053.84 × 58,322.96
  4. Step 4: Simplify right side
    100,765.28x = 8,110,031,548.17
  5. Step 5: Solve for x
    x = 8,110,031,548.17/100,765.28
  6. Step 6: Final answer
    x = 80,484.38

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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.