Home / 99,728.30-149,455.23-42,733.98

Finding the Fourth Proportional to 99,728.30, 149,455.23 and 42,733.98

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Solution

The fourth proportional to 99,728.30, 149,455.23 and 42,733.98 is: 64,042.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,728.30 : 149,455.23 = 42,733.98 : x
  2. Step 2: Convert to fraction form
    99,728.30/149,455.23 = 42,733.98/x
  3. Step 3: Cross multiply
    99,728.30x = 149,455.23 × 42,733.98
  4. Step 4: Simplify right side
    99,728.30x = 6,386,816,809.72
  5. Step 5: Solve for x
    x = 6,386,816,809.72/99,728.30
  6. Step 6: Final answer
    x = 64,042.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.