Home / 99,566.16-137,411.28-57,138

Finding the Fourth Proportional to 99,566.16, 137,411.28 and 57,138

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Solution

The fourth proportional to 99,566.16, 137,411.28 and 57,138 is: 78,856.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,566.16 : 137,411.28 = 57,138 : x
  2. Step 2: Convert to fraction form
    99,566.16/137,411.28 = 57,138/x
  3. Step 3: Cross multiply
    99,566.16x = 137,411.28 × 57,138
  4. Step 4: Simplify right side
    99,566.16x = 7,851,405,716.64
  5. Step 5: Solve for x
    x = 7,851,405,716.64/99,566.16
  6. Step 6: Final answer
    x = 78,856.17

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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.