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Finding the Fourth Proportional to 115,482.26, 159,372 and 81,501.81

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Solution

The fourth proportional to 115,482.26, 159,372 and 81,501.81 is: 112,477.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,482.26 : 159,372 = 81,501.81 : x
  2. Step 2: Convert to fraction form
    115,482.26/159,372 = 81,501.81/x
  3. Step 3: Cross multiply
    115,482.26x = 159,372 × 81,501.81
  4. Step 4: Simplify right side
    115,482.26x = 12,989,106,463.32
  5. Step 5: Solve for x
    x = 12,989,106,463.32/115,482.26
  6. Step 6: Final answer
    x = 112,477.08

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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.