Home / 103,695.08-155,521.35-28,796.40

Finding the Fourth Proportional to 103,695.08, 155,521.35 and 28,796.40

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Solution

The fourth proportional to 103,695.08, 155,521.35 and 28,796.40 is: 43,188.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,695.08 : 155,521.35 = 28,796.40 : x
  2. Step 2: Convert to fraction form
    103,695.08/155,521.35 = 28,796.40/x
  3. Step 3: Cross multiply
    103,695.08x = 155,521.35 × 28,796.40
  4. Step 4: Simplify right side
    103,695.08x = 4,478,455,003.14
  5. Step 5: Solve for x
    x = 4,478,455,003.14/103,695.08
  6. Step 6: Final answer
    x = 43,188.69

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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.