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Finding the Fourth Proportional to 139,666.60, 192,741.70 and 76,006.12

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Solution

The fourth proportional to 139,666.60, 192,741.70 and 76,006.12 is: 104,889.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,666.60 : 192,741.70 = 76,006.12 : x
  2. Step 2: Convert to fraction form
    139,666.60/192,741.70 = 76,006.12/x
  3. Step 3: Cross multiply
    139,666.60x = 192,741.70 × 76,006.12
  4. Step 4: Simplify right side
    139,666.60x = 14,649,548,779.20
  5. Step 5: Solve for x
    x = 14,649,548,779.20/139,666.60
  6. Step 6: Final answer
    x = 104,889.42

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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.