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Finding the Fourth Proportional to 139,435.00, 192,421.52 and 75,772.80

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Solution

The fourth proportional to 139,435.00, 192,421.52 and 75,772.80 is: 104,567.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,435.00 : 192,421.52 = 75,772.80 : x
  2. Step 2: Convert to fraction form
    139,435.00/192,421.52 = 75,772.80/x
  3. Step 3: Cross multiply
    139,435.00x = 192,421.52 × 75,772.80
  4. Step 4: Simplify right side
    139,435.00x = 14,580,317,682.16
  5. Step 5: Solve for x
    x = 14,580,317,682.16/139,435.00
  6. Step 6: Final answer
    x = 104,567.13

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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.