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Finding the Fourth Proportional to 115,271.44, 159,075.80 and 64,970.44

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Solution

The fourth proportional to 115,271.44, 159,075.80 and 64,970.44 is: 89,659.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,271.44 : 159,075.80 = 64,970.44 : x
  2. Step 2: Convert to fraction form
    115,271.44/159,075.80 = 64,970.44/x
  3. Step 3: Cross multiply
    115,271.44x = 159,075.80 × 64,970.44
  4. Step 4: Simplify right side
    115,271.44x = 10,335,224,240.45
  5. Step 5: Solve for x
    x = 10,335,224,240.45/115,271.44
  6. Step 6: Final answer
    x = 89,659.89

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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.