Home / 103,655.45-142,921.06-69,591.56

Finding the Fourth Proportional to 103,655.45, 142,921.06 and 69,591.56

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Solution

The fourth proportional to 103,655.45, 142,921.06 and 69,591.56 is: 95,953.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,655.45 : 142,921.06 = 69,591.56 : x
  2. Step 2: Convert to fraction form
    103,655.45/142,921.06 = 69,591.56/x
  3. Step 3: Cross multiply
    103,655.45x = 142,921.06 × 69,591.56
  4. Step 4: Simplify right side
    103,655.45x = 9,946,098,633.67
  5. Step 5: Solve for x
    x = 9,946,098,633.67/103,655.45
  6. Step 6: Final answer
    x = 95,953.46

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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.