Home / 99,427.43-137,178.95-56,399.82

Finding the Fourth Proportional to 99,427.43, 137,178.95 and 56,399.82

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Solution

The fourth proportional to 99,427.43, 137,178.95 and 56,399.82 is: 77,814.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,427.43 : 137,178.95 = 56,399.82 : x
  2. Step 2: Convert to fraction form
    99,427.43/137,178.95 = 56,399.82/x
  3. Step 3: Cross multiply
    99,427.43x = 137,178.95 × 56,399.82
  4. Step 4: Simplify right side
    99,427.43x = 7,736,867,805.79
  5. Step 5: Solve for x
    x = 7,736,867,805.79/99,427.43
  6. Step 6: Final answer
    x = 77,814.22

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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.