Home / 138,478.21-191,100.07-74,816.06

Finding the Fourth Proportional to 138,478.21, 191,100.07 and 74,816.06

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Solution

The fourth proportional to 138,478.21, 191,100.07 and 74,816.06 is: 103,246.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,478.21 : 191,100.07 = 74,816.06 : x
  2. Step 2: Convert to fraction form
    138,478.21/191,100.07 = 74,816.06/x
  3. Step 3: Cross multiply
    138,478.21x = 191,100.07 × 74,816.06
  4. Step 4: Simplify right side
    138,478.21x = 14,297,354,303.12
  5. Step 5: Solve for x
    x = 14,297,354,303.12/138,478.21
  6. Step 6: Final answer
    x = 103,246.24

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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.