Home / 105,461.20-157,999.80-83,419.60

Finding the Fourth Proportional to 105,461.20, 157,999.80 and 83,419.60

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Solution

The fourth proportional to 105,461.20, 157,999.80 and 83,419.60 is: 124,977.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,461.20 : 157,999.80 = 83,419.60 : x
  2. Step 2: Convert to fraction form
    105,461.20/157,999.80 = 83,419.60/x
  3. Step 3: Cross multiply
    105,461.20x = 157,999.80 × 83,419.60
  4. Step 4: Simplify right side
    105,461.20x = 13,180,280,116.08
  5. Step 5: Solve for x
    x = 13,180,280,116.08/105,461.20
  6. Step 6: Final answer
    x = 124,977.53

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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.