Home / 139,376.48-192,341.60-75,715.52

Finding the Fourth Proportional to 139,376.48, 192,341.60 and 75,715.52

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Solution

The fourth proportional to 139,376.48, 192,341.60 and 75,715.52 is: 104,488.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,376.48 : 192,341.60 = 75,715.52 : x
  2. Step 2: Convert to fraction form
    139,376.48/192,341.60 = 75,715.52/x
  3. Step 3: Cross multiply
    139,376.48x = 192,341.60 × 75,715.52
  4. Step 4: Simplify right side
    139,376.48x = 14,563,244,261.63
  5. Step 5: Solve for x
    x = 14,563,244,261.63/139,376.48
  6. Step 6: Final answer
    x = 104,488.54

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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.