Home / 139,810.06-192,939.51-76,148.38

Finding the Fourth Proportional to 139,810.06, 192,939.51 and 76,148.38

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Solution

The fourth proportional to 139,810.06, 192,939.51 and 76,148.38 is: 105,085.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,810.06 : 192,939.51 = 76,148.38 : x
  2. Step 2: Convert to fraction form
    139,810.06/192,939.51 = 76,148.38/x
  3. Step 3: Cross multiply
    139,810.06x = 192,939.51 × 76,148.38
  4. Step 4: Simplify right side
    139,810.06x = 14,692,031,124.49
  5. Step 5: Solve for x
    x = 14,692,031,124.49/139,810.06
  6. Step 6: Final answer
    x = 105,085.65

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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.