Home / 139,445.38-192,434.60-75,783.16

Finding the Fourth Proportional to 139,445.38, 192,434.60 and 75,783.16

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Solution

The fourth proportional to 139,445.38, 192,434.60 and 75,783.16 is: 104,580.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,445.38 : 192,434.60 = 75,783.16 : x
  2. Step 2: Convert to fraction form
    139,445.38/192,434.60 = 75,783.16/x
  3. Step 3: Cross multiply
    139,445.38x = 192,434.60 × 75,783.16
  4. Step 4: Simplify right side
    139,445.38x = 14,583,302,511.34
  5. Step 5: Solve for x
    x = 14,583,302,511.34/139,445.38
  6. Step 6: Final answer
    x = 104,580.75

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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.