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Finding the Fourth Proportional to 139,307.22, 192,242.70 and 75,641.22

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Solution

The fourth proportional to 139,307.22, 192,242.70 and 75,641.22 is: 104,384.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,307.22 : 192,242.70 = 75,641.22 : x
  2. Step 2: Convert to fraction form
    139,307.22/192,242.70 = 75,641.22/x
  3. Step 3: Cross multiply
    139,307.22x = 192,242.70 × 75,641.22
  4. Step 4: Simplify right side
    139,307.22x = 14,541,472,364.09
  5. Step 5: Solve for x
    x = 14,541,472,364.09/139,307.22
  6. Step 6: Final answer
    x = 104,384.20

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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.