Home / 105,337.82-145,490.88-71,287.26

Finding the Fourth Proportional to 105,337.82, 145,490.88 and 71,287.26

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Solution

The fourth proportional to 105,337.82, 145,490.88 and 71,287.26 is: 98,460.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,337.82 : 145,490.88 = 71,287.26 : x
  2. Step 2: Convert to fraction form
    105,337.82/145,490.88 = 71,287.26/x
  3. Step 3: Cross multiply
    105,337.82x = 145,490.88 × 71,287.26
  4. Step 4: Simplify right side
    105,337.82x = 10,371,646,190.19
  5. Step 5: Solve for x
    x = 10,371,646,190.19/105,337.82
  6. Step 6: Final answer
    x = 98,460.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.