Home / 101,154.21-139,582.87-55,829.28

Finding the Fourth Proportional to 101,154.21, 139,582.87 and 55,829.28

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Solution

The fourth proportional to 101,154.21, 139,582.87 and 55,829.28 is: 77,038.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,154.21 : 139,582.87 = 55,829.28 : x
  2. Step 2: Convert to fraction form
    101,154.21/139,582.87 = 55,829.28/x
  3. Step 3: Cross multiply
    101,154.21x = 139,582.87 × 55,829.28
  4. Step 4: Simplify right side
    101,154.21x = 7,792,811,132.43
  5. Step 5: Solve for x
    x = 7,792,811,132.43/101,154.21
  6. Step 6: Final answer
    x = 77,038.92

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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.