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Finding the Fourth Proportional to 145,729.01, 218,504.47 and 69,850.77

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Solution

The fourth proportional to 145,729.01, 218,504.47 and 69,850.77 is: 104,733.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,729.01 : 218,504.47 = 69,850.77 : x
  2. Step 2: Convert to fraction form
    145,729.01/218,504.47 = 69,850.77/x
  3. Step 3: Cross multiply
    145,729.01x = 218,504.47 × 69,850.77
  4. Step 4: Simplify right side
    145,729.01x = 15,262,704,483.92
  5. Step 5: Solve for x
    x = 15,262,704,483.92/145,729.01
  6. Step 6: Final answer
    x = 104,733.47

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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.