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Finding the Fourth Proportional to 139,465.81, 192,461.85 and 75,803.60

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Solution

The fourth proportional to 139,465.81, 192,461.85 and 75,803.60 is: 104,608.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,465.81 : 192,461.85 = 75,803.60 : x
  2. Step 2: Convert to fraction form
    139,465.81/192,461.85 = 75,803.60/x
  3. Step 3: Cross multiply
    139,465.81x = 192,461.85 × 75,803.60
  4. Step 4: Simplify right side
    139,465.81x = 14,589,301,092.66
  5. Step 5: Solve for x
    x = 14,589,301,092.66/139,465.81
  6. Step 6: Final answer
    x = 104,608.45

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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.