Home / 147,349.32-219,634.93-139,869.78

Finding the Fourth Proportional to 147,349.32, 219,634.93 and 139,869.78

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Solution

The fourth proportional to 147,349.32, 219,634.93 and 139,869.78 is: 208,486.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,349.32 : 219,634.93 = 139,869.78 : x
  2. Step 2: Convert to fraction form
    147,349.32/219,634.93 = 139,869.78/x
  3. Step 3: Cross multiply
    147,349.32x = 219,634.93 × 139,869.78
  4. Step 4: Simplify right side
    147,349.32x = 30,720,288,989.74
  5. Step 5: Solve for x
    x = 30,720,288,989.74/147,349.32
  6. Step 6: Final answer
    x = 208,486.13

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.