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Finding the Fourth Proportional to 147,059.40, 220,596.30 and 77,075.40

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Solution

The fourth proportional to 147,059.40, 220,596.30 and 77,075.40 is: 115,616.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,059.40 : 220,596.30 = 77,075.40 : x
  2. Step 2: Convert to fraction form
    147,059.40/220,596.30 = 77,075.40/x
  3. Step 3: Cross multiply
    147,059.40x = 220,596.30 × 77,075.40
  4. Step 4: Simplify right side
    147,059.40x = 17,002,548,061.02
  5. Step 5: Solve for x
    x = 17,002,548,061.02/147,059.40
  6. Step 6: Final answer
    x = 115,616.87

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1.5x scale

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.