Home / 99,765.23-137,670.50-56,738.91

Finding the Fourth Proportional to 99,765.23, 137,670.50 and 56,738.91

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Solution

The fourth proportional to 99,765.23, 137,670.50 and 56,738.91 is: 78,296.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,765.23 : 137,670.50 = 56,738.91 : x
  2. Step 2: Convert to fraction form
    99,765.23/137,670.50 = 56,738.91/x
  3. Step 3: Cross multiply
    99,765.23x = 137,670.50 × 56,738.91
  4. Step 4: Simplify right side
    99,765.23x = 7,811,273,825.46
  5. Step 5: Solve for x
    x = 7,811,273,825.46/99,765.23
  6. Step 6: Final answer
    x = 78,296.56

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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.