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Finding the Fourth Proportional to 115,376.67, 159,219.72 and 65,075.67

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Solution

The fourth proportional to 115,376.67, 159,219.72 and 65,075.67 is: 89,804.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,376.67 : 159,219.72 = 65,075.67 : x
  2. Step 2: Convert to fraction form
    115,376.67/159,219.72 = 65,075.67/x
  3. Step 3: Cross multiply
    115,376.67x = 159,219.72 × 65,075.67
  4. Step 4: Simplify right side
    115,376.67x = 10,361,329,956.21
  5. Step 5: Solve for x
    x = 10,361,329,956.21/115,376.67
  6. Step 6: Final answer
    x = 89,804.38

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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.