Home / 139,423.51-192,403.93-79,005.66

Finding the Fourth Proportional to 139,423.51, 192,403.93 and 79,005.66

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Solution

The fourth proportional to 139,423.51, 192,403.93 and 79,005.66 is: 109,027.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,423.51 : 192,403.93 = 79,005.66 : x
  2. Step 2: Convert to fraction form
    139,423.51/192,403.93 = 79,005.66/x
  3. Step 3: Cross multiply
    139,423.51x = 192,403.93 × 79,005.66
  4. Step 4: Simplify right side
    139,423.51x = 15,200,999,476.24
  5. Step 5: Solve for x
    x = 15,200,999,476.24/139,423.51
  6. Step 6: Final answer
    x = 109,027.52

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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.