Home / 143,925,178.32-198,621,440.28-78,735,082.32

Finding the Fourth Proportional to 143,925,178.32, 198,621,440.28 and 78,735,082.32

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Solution

The fourth proportional to 143,925,178.32, 198,621,440.28 and 78,735,082.32 is: 108,656,981.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,925,178.32 : 198,621,440.28 = 78,735,082.32 : x
  2. Step 2: Convert to fraction form
    143,925,178.32/198,621,440.28 = 78,735,082.32/x
  3. Step 3: Cross multiply
    143,925,178.32x = 198,621,440.28 × 78,735,082.32
  4. Step 4: Simplify right side
    143,925,178.32x = 15,638,475,450,962,762
  5. Step 5: Solve for x
    x = 15,638,475,450,962,762/143,925,178.32
  6. Step 6: Final answer
    x = 108,656,981.59

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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.