Home / 105,395.06-145,442.16-57,647.36

Finding the Fourth Proportional to 105,395.06, 145,442.16 and 57,647.36

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Solution

The fourth proportional to 105,395.06, 145,442.16 and 57,647.36 is: 79,551.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,395.06 : 145,442.16 = 57,647.36 : x
  2. Step 2: Convert to fraction form
    105,395.06/145,442.16 = 57,647.36/x
  3. Step 3: Cross multiply
    105,395.06x = 145,442.16 × 57,647.36
  4. Step 4: Simplify right side
    105,395.06x = 8,384,356,556.70
  5. Step 5: Solve for x
    x = 8,384,356,556.70/105,395.06
  6. Step 6: Final answer
    x = 79,551.70

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1.5x scale

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.