Home / 100,212.40-149,534.42-99,629.20

Finding the Fourth Proportional to 100,212.40, 149,534.42 and 99,629.20

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Solution

The fourth proportional to 100,212.40, 149,534.42 and 99,629.20 is: 148,664.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,212.40 : 149,534.42 = 99,629.20 : x
  2. Step 2: Convert to fraction form
    100,212.40/149,534.42 = 99,629.20/x
  3. Step 3: Cross multiply
    100,212.40x = 149,534.42 × 99,629.20
  4. Step 4: Simplify right side
    100,212.40x = 14,897,994,637.06
  5. Step 5: Solve for x
    x = 14,897,994,637.06/100,212.40
  6. Step 6: Final answer
    x = 148,664.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.