Home / 105,665.64-145,822.32-57,918.98

Finding the Fourth Proportional to 105,665.64, 145,822.32 and 57,918.98

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Solution

The fourth proportional to 105,665.64, 145,822.32 and 57,918.98 is: 79,930.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,665.64 : 145,822.32 = 57,918.98 : x
  2. Step 2: Convert to fraction form
    105,665.64/145,822.32 = 57,918.98/x
  3. Step 3: Cross multiply
    105,665.64x = 145,822.32 × 57,918.98
  4. Step 4: Simplify right side
    105,665.64x = 8,445,879,306.52
  5. Step 5: Solve for x
    x = 8,445,879,306.52/105,665.64
  6. Step 6: Final answer
    x = 79,930.23

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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.