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Finding the Fourth Proportional to 139,524.32, 192,547.44 and 75,866.48

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Solution

The fourth proportional to 139,524.32, 192,547.44 and 75,866.48 is: 104,697.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,524.32 : 192,547.44 = 75,866.48 : x
  2. Step 2: Convert to fraction form
    139,524.32/192,547.44 = 75,866.48/x
  3. Step 3: Cross multiply
    139,524.32x = 192,547.44 × 75,866.48
  4. Step 4: Simplify right side
    139,524.32x = 14,607,896,505.81
  5. Step 5: Solve for x
    x = 14,607,896,505.81/139,524.32
  6. Step 6: Final answer
    x = 104,697.85

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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.