Home / 109,031.40-163,352.70-67,429.80

Finding the Fourth Proportional to 109,031.40, 163,352.70 and 67,429.80

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Solution

The fourth proportional to 109,031.40, 163,352.70 and 67,429.80 is: 101,024.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,031.40 : 163,352.70 = 67,429.80 : x
  2. Step 2: Convert to fraction form
    109,031.40/163,352.70 = 67,429.80/x
  3. Step 3: Cross multiply
    109,031.40x = 163,352.70 × 67,429.80
  4. Step 4: Simplify right side
    109,031.40x = 11,014,839,890.46
  5. Step 5: Solve for x
    x = 11,014,839,890.46/109,031.40
  6. Step 6: Final answer
    x = 101,024.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.