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Finding the Fourth Proportional to 147,075.60, 220,704.60 and 77,005.20

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Solution

The fourth proportional to 147,075.60, 220,704.60 and 77,005.20 is: 115,555.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,075.60 : 220,704.60 = 77,005.20 : x
  2. Step 2: Convert to fraction form
    147,075.60/220,704.60 = 77,005.20/x
  3. Step 3: Cross multiply
    147,075.60x = 220,704.60 × 77,005.20
  4. Step 4: Simplify right side
    147,075.60x = 16,995,401,863.92
  5. Step 5: Solve for x
    x = 16,995,401,863.92/147,075.60
  6. Step 6: Final answer
    x = 115,555.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.