Home / 99,690.07-137,566.81-56,663.58

Finding the Fourth Proportional to 99,690.07, 137,566.81 and 56,663.58

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Solution

The fourth proportional to 99,690.07, 137,566.81 and 56,663.58 is: 78,192.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,690.07 : 137,566.81 = 56,663.58 : x
  2. Step 2: Convert to fraction form
    99,690.07/137,566.81 = 56,663.58/x
  3. Step 3: Cross multiply
    99,690.07x = 137,566.81 × 56,663.58
  4. Step 4: Simplify right side
    99,690.07x = 7,795,027,943.78
  5. Step 5: Solve for x
    x = 7,795,027,943.78/99,690.07
  6. Step 6: Final answer
    x = 78,192.62

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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.