Home / 139,051,356.75-191,891,082.52-75,471,718.70

Finding the Fourth Proportional to 139,051,356.75, 191,891,082.52 and 75,471,718.70

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Solution

The fourth proportional to 139,051,356.75, 191,891,082.52 and 75,471,718.70 is: 104,151,085.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,051,356.75 : 191,891,082.52 = 75,471,718.70 : x
  2. Step 2: Convert to fraction form
    139,051,356.75/191,891,082.52 = 75,471,718.70/x
  3. Step 3: Cross multiply
    139,051,356.75x = 191,891,082.52 × 75,471,718.70
  4. Step 4: Simplify right side
    139,051,356.75x = 14,482,349,800,987,928
  5. Step 5: Solve for x
    x = 14,482,349,800,987,928/139,051,356.75
  6. Step 6: Final answer
    x = 104,151,085.90

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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.