Home / 99,964.35-137,946.78-54,643.95

Finding the Fourth Proportional to 99,964.35, 137,946.78 and 54,643.95

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Solution

The fourth proportional to 99,964.35, 137,946.78 and 54,643.95 is: 75,406.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,964.35 : 137,946.78 = 54,643.95 : x
  2. Step 2: Convert to fraction form
    99,964.35/137,946.78 = 54,643.95/x
  3. Step 3: Cross multiply
    99,964.35x = 137,946.78 × 54,643.95
  4. Step 4: Simplify right side
    99,964.35x = 7,537,956,948.98
  5. Step 5: Solve for x
    x = 7,537,956,948.98/99,964.35
  6. Step 6: Final answer
    x = 75,406.45

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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.