Home / 147,929.40-221,894.10-139,764.60

Finding the Fourth Proportional to 147,929.40, 221,894.10 and 139,764.60

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Solution

The fourth proportional to 147,929.40, 221,894.10 and 139,764.60 is: 209,646.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,929.40 : 221,894.10 = 139,764.60 : x
  2. Step 2: Convert to fraction form
    147,929.40/221,894.10 = 139,764.60/x
  3. Step 3: Cross multiply
    147,929.40x = 221,894.10 × 139,764.60
  4. Step 4: Simplify right side
    147,929.40x = 31,012,940,128.86
  5. Step 5: Solve for x
    x = 31,012,940,128.86/147,929.40
  6. Step 6: Final answer
    x = 209,646.90

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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.