Home / 100,929.54-139,276.08-60,645

Finding the Fourth Proportional to 100,929.54, 139,276.08 and 60,645

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Solution

The fourth proportional to 100,929.54, 139,276.08 and 60,645 is: 83,686.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,929.54 : 139,276.08 = 60,645 : x
  2. Step 2: Convert to fraction form
    100,929.54/139,276.08 = 60,645/x
  3. Step 3: Cross multiply
    100,929.54x = 139,276.08 × 60,645
  4. Step 4: Simplify right side
    100,929.54x = 8,446,397,871.60
  5. Step 5: Solve for x
    x = 8,446,397,871.60/100,929.54
  6. Step 6: Final answer
    x = 83,686.08

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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.