Home / 99,744.36-137,646.50-56,723.82

Finding the Fourth Proportional to 99,744.36, 137,646.50 and 56,723.82

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Solution

The fourth proportional to 99,744.36, 137,646.50 and 56,723.82 is: 78,278.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,744.36 : 137,646.50 = 56,723.82 : x
  2. Step 2: Convert to fraction form
    99,744.36/137,646.50 = 56,723.82/x
  3. Step 3: Cross multiply
    99,744.36x = 137,646.50 × 56,723.82
  4. Step 4: Simplify right side
    99,744.36x = 7,807,835,289.63
  5. Step 5: Solve for x
    x = 7,807,835,289.63/99,744.36
  6. Step 6: Final answer
    x = 78,278.46

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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.