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Finding the Fourth Proportional to 115,642.53, 159,577.94 and 70,314.23

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Solution

The fourth proportional to 115,642.53, 159,577.94 and 70,314.23 is: 97,028.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,642.53 : 159,577.94 = 70,314.23 : x
  2. Step 2: Convert to fraction form
    115,642.53/159,577.94 = 70,314.23/x
  3. Step 3: Cross multiply
    115,642.53x = 159,577.94 × 70,314.23
  4. Step 4: Simplify right side
    115,642.53x = 11,220,599,002.41
  5. Step 5: Solve for x
    x = 11,220,599,002.41/115,642.53
  6. Step 6: Final answer
    x = 97,028.31

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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.