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Finding the Fourth Proportional to 113,999.70, 157,297.93 and 71,539.10

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Solution

The fourth proportional to 113,999.70, 157,297.93 and 71,539.10 is: 98,710.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,999.70 : 157,297.93 = 71,539.10 : x
  2. Step 2: Convert to fraction form
    113,999.70/157,297.93 = 71,539.10/x
  3. Step 3: Cross multiply
    113,999.70x = 157,297.93 × 71,539.10
  4. Step 4: Simplify right side
    113,999.70x = 11,252,951,557.57
  5. Step 5: Solve for x
    x = 11,252,951,557.57/113,999.70
  6. Step 6: Final answer
    x = 98,710.36

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1.5x scale

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.