Home / 139,010.02-191,838.35-76,921.20

Finding the Fourth Proportional to 139,010.02, 191,838.35 and 76,921.20

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Solution

The fourth proportional to 139,010.02, 191,838.35 and 76,921.20 is: 106,153.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,010.02 : 191,838.35 = 76,921.20 : x
  2. Step 2: Convert to fraction form
    139,010.02/191,838.35 = 76,921.20/x
  3. Step 3: Cross multiply
    139,010.02x = 191,838.35 × 76,921.20
  4. Step 4: Simplify right side
    139,010.02x = 14,756,436,280.32
  5. Step 5: Solve for x
    x = 14,756,436,280.32/139,010.02
  6. Step 6: Final answer
    x = 106,153.76

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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.