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Finding the Fourth Proportional to 104,443.90, 144,132.90 and 56,697.30

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Solution

The fourth proportional to 104,443.90, 144,132.90 and 56,697.30 is: 78,242.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,443.90 : 144,132.90 = 56,697.30 : x
  2. Step 2: Convert to fraction form
    104,443.90/144,132.90 = 56,697.30/x
  3. Step 3: Cross multiply
    104,443.90x = 144,132.90 × 56,697.30
  4. Step 4: Simplify right side
    104,443.90x = 8,171,946,271.17
  5. Step 5: Solve for x
    x = 8,171,946,271.17/104,443.90
  6. Step 6: Final answer
    x = 78,242.45

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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.