Home / 101,022.02-139,411.35-55,701.80

Finding the Fourth Proportional to 101,022.02, 139,411.35 and 55,701.80

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Solution

The fourth proportional to 101,022.02, 139,411.35 and 55,701.80 is: 76,869.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,022.02 : 139,411.35 = 55,701.80 : x
  2. Step 2: Convert to fraction form
    101,022.02/139,411.35 = 55,701.80/x
  3. Step 3: Cross multiply
    101,022.02x = 139,411.35 × 55,701.80
  4. Step 4: Simplify right side
    101,022.02x = 7,765,463,135.43
  5. Step 5: Solve for x
    x = 7,765,463,135.43/101,022.02
  6. Step 6: Final answer
    x = 76,869.01

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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.