Home / 105,019.32-157,319.18-71,656.62

Finding the Fourth Proportional to 105,019.32, 157,319.18 and 71,656.62

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Solution

The fourth proportional to 105,019.32, 157,319.18 and 71,656.62 is: 107,341.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,019.32 : 157,319.18 = 71,656.62 : x
  2. Step 2: Convert to fraction form
    105,019.32/157,319.18 = 71,656.62/x
  3. Step 3: Cross multiply
    105,019.32x = 157,319.18 × 71,656.62
  4. Step 4: Simplify right side
    105,019.32x = 11,272,960,699.97
  5. Step 5: Solve for x
    x = 11,272,960,699.97/105,019.32
  6. Step 6: Final answer
    x = 107,341.78

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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.