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Finding the Fourth Proportional to 101,011.55, 139,391.73 and 55,070.20

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Solution

The fourth proportional to 101,011.55, 139,391.73 and 55,070.20 is: 75,994.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,011.55 : 139,391.73 = 55,070.20 : x
  2. Step 2: Convert to fraction form
    101,011.55/139,391.73 = 55,070.20/x
  3. Step 3: Cross multiply
    101,011.55x = 139,391.73 × 55,070.20
  4. Step 4: Simplify right side
    101,011.55x = 7,676,329,752.49
  5. Step 5: Solve for x
    x = 7,676,329,752.49/101,011.55
  6. Step 6: Final answer
    x = 75,994.57

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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.