Home / 100,929.95-139,272.90-62,161.60

Finding the Fourth Proportional to 100,929.95, 139,272.90 and 62,161.60

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Solution

The fourth proportional to 100,929.95, 139,272.90 and 62,161.60 is: 85,776.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,929.95 : 139,272.90 = 62,161.60 : x
  2. Step 2: Convert to fraction form
    100,929.95/139,272.90 = 62,161.60/x
  3. Step 3: Cross multiply
    100,929.95x = 139,272.90 × 62,161.60
  4. Step 4: Simplify right side
    100,929.95x = 8,657,425,719.35
  5. Step 5: Solve for x
    x = 8,657,425,719.35/100,929.95
  6. Step 6: Final answer
    x = 85,776.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.