Home / 103,548.20-155,094.64-85,575.16

Finding the Fourth Proportional to 103,548.20, 155,094.64 and 85,575.16

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Solution

The fourth proportional to 103,548.20, 155,094.64 and 85,575.16 is: 128,174.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,548.20 : 155,094.64 = 85,575.16 : x
  2. Step 2: Convert to fraction form
    103,548.20/155,094.64 = 85,575.16/x
  3. Step 3: Cross multiply
    103,548.20x = 155,094.64 × 85,575.16
  4. Step 4: Simplify right side
    103,548.20x = 13,272,248,633.14
  5. Step 5: Solve for x
    x = 13,272,248,633.14/103,548.20
  6. Step 6: Final answer
    x = 128,174.60

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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.