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Finding the Fourth Proportional to 123,395.20, 185,038.08 and 56,819.20

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Solution

The fourth proportional to 123,395.20, 185,038.08 and 56,819.20 is: 85,203.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,395.20 : 185,038.08 = 56,819.20 : x
  2. Step 2: Convert to fraction form
    123,395.20/185,038.08 = 56,819.20/x
  3. Step 3: Cross multiply
    123,395.20x = 185,038.08 × 56,819.20
  4. Step 4: Simplify right side
    123,395.20x = 10,513,715,675.14
  5. Step 5: Solve for x
    x = 10,513,715,675.14/123,395.20
  6. Step 6: Final answer
    x = 85,203.60

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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.