Home / 100,528.02-138,723.26-57,508.37

Finding the Fourth Proportional to 100,528.02, 138,723.26 and 57,508.37

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Solution

The fourth proportional to 100,528.02, 138,723.26 and 57,508.37 is: 79,358.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,528.02 : 138,723.26 = 57,508.37 : x
  2. Step 2: Convert to fraction form
    100,528.02/138,723.26 = 57,508.37/x
  3. Step 3: Cross multiply
    100,528.02x = 138,723.26 × 57,508.37
  4. Step 4: Simplify right side
    100,528.02x = 7,977,747,582.53
  5. Step 5: Solve for x
    x = 7,977,747,582.53/100,528.02
  6. Step 6: Final answer
    x = 79,358.45

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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.