Home / 100,210.50-138,311.55-92,131.36

Finding the Fourth Proportional to 100,210.50, 138,311.55 and 92,131.36

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Solution

The fourth proportional to 100,210.50, 138,311.55 and 92,131.36 is: 127,160.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,210.50 : 138,311.55 = 92,131.36 : x
  2. Step 2: Convert to fraction form
    100,210.50/138,311.55 = 92,131.36/x
  3. Step 3: Cross multiply
    100,210.50x = 138,311.55 × 92,131.36
  4. Step 4: Simplify right side
    100,210.50x = 12,742,830,859.43
  5. Step 5: Solve for x
    x = 12,742,830,859.43/100,210.50
  6. Step 6: Final answer
    x = 127,160.64

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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.