Home / 108,146.55-162,219.74-78,751.38

Finding the Fourth Proportional to 108,146.55, 162,219.74 and 78,751.38

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Solution

The fourth proportional to 108,146.55, 162,219.74 and 78,751.38 is: 118,127.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,146.55 : 162,219.74 = 78,751.38 : x
  2. Step 2: Convert to fraction form
    108,146.55/162,219.74 = 78,751.38/x
  3. Step 3: Cross multiply
    108,146.55x = 162,219.74 × 78,751.38
  4. Step 4: Simplify right side
    108,146.55x = 12,775,027,994.48
  5. Step 5: Solve for x
    x = 12,775,027,994.48/108,146.55
  6. Step 6: Final answer
    x = 118,127.00

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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.