Home / 109,417.60-164,060.70-42,778.27

Finding the Fourth Proportional to 109,417.60, 164,060.70 and 42,778.27

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Solution

The fourth proportional to 109,417.60, 164,060.70 and 42,778.27 is: 64,141.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,417.60 : 164,060.70 = 42,778.27 : x
  2. Step 2: Convert to fraction form
    109,417.60/164,060.70 = 42,778.27/x
  3. Step 3: Cross multiply
    109,417.60x = 164,060.70 × 42,778.27
  4. Step 4: Simplify right side
    109,417.60x = 7,018,232,920.99
  5. Step 5: Solve for x
    x = 7,018,232,920.99/109,417.60
  6. Step 6: Final answer
    x = 64,141.72

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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.