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Finding the Fourth Proportional to 143,384.66, 197,870.18 and 79,718.66

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Solution

The fourth proportional to 143,384.66, 197,870.18 and 79,718.66 is: 110,011.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,384.66 : 197,870.18 = 79,718.66 : x
  2. Step 2: Convert to fraction form
    143,384.66/197,870.18 = 79,718.66/x
  3. Step 3: Cross multiply
    143,384.66x = 197,870.18 × 79,718.66
  4. Step 4: Simplify right side
    143,384.66x = 15,773,946,297.53
  5. Step 5: Solve for x
    x = 15,773,946,297.53/143,384.66
  6. Step 6: Final answer
    x = 110,011.39

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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.