Home / 105,658.15-145,807.57-57,914.47

Finding the Fourth Proportional to 105,658.15, 145,807.57 and 57,914.47

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Solution

The fourth proportional to 105,658.15, 145,807.57 and 57,914.47 is: 79,921.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,658.15 : 145,807.57 = 57,914.47 : x
  2. Step 2: Convert to fraction form
    105,658.15/145,807.57 = 57,914.47/x
  3. Step 3: Cross multiply
    105,658.15x = 145,807.57 × 57,914.47
  4. Step 4: Simplify right side
    105,658.15x = 8,444,368,138.54
  5. Step 5: Solve for x
    x = 8,444,368,138.54/105,658.15
  6. Step 6: Final answer
    x = 79,921.60

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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.