Home / 103,201.02-142,420.28-62,905.55

Finding the Fourth Proportional to 103,201.02, 142,420.28 and 62,905.55

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Solution

The fourth proportional to 103,201.02, 142,420.28 and 62,905.55 is: 86,811.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,201.02 : 142,420.28 = 62,905.55 : x
  2. Step 2: Convert to fraction form
    103,201.02/142,420.28 = 62,905.55/x
  3. Step 3: Cross multiply
    103,201.02x = 142,420.28 × 62,905.55
  4. Step 4: Simplify right side
    103,201.02x = 8,959,025,017.92
  5. Step 5: Solve for x
    x = 8,959,025,017.92/103,201.02
  6. Step 6: Final answer
    x = 86,811.40

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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.