Home / 109,865.70-164,798.55-72,929.70

Finding the Fourth Proportional to 109,865.70, 164,798.55 and 72,929.70

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Solution

The fourth proportional to 109,865.70, 164,798.55 and 72,929.70 is: 109,394.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,865.70 : 164,798.55 = 72,929.70 : x
  2. Step 2: Convert to fraction form
    109,865.70/164,798.55 = 72,929.70/x
  3. Step 3: Cross multiply
    109,865.70x = 164,798.55 × 72,929.70
  4. Step 4: Simplify right side
    109,865.70x = 12,018,708,811.94
  5. Step 5: Solve for x
    x = 12,018,708,811.94/109,865.70
  6. Step 6: Final answer
    x = 109,394.55

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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.