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Finding the Fourth Proportional to 139,364.21, 192,313.10 and 75,700.64

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Solution

The fourth proportional to 139,364.21, 192,313.10 and 75,700.64 is: 104,461.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,364.21 : 192,313.10 = 75,700.64 : x
  2. Step 2: Convert to fraction form
    139,364.21/192,313.10 = 75,700.64/x
  3. Step 3: Cross multiply
    139,364.21x = 192,313.10 × 75,700.64
  4. Step 4: Simplify right side
    139,364.21x = 14,558,225,420.42
  5. Step 5: Solve for x
    x = 14,558,225,420.42/139,364.21
  6. Step 6: Final answer
    x = 104,461.72

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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.