Home / 100,018.09-149,923.45-47,387.53

Finding the Fourth Proportional to 100,018.09, 149,923.45 and 47,387.53

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Solution

The fourth proportional to 100,018.09, 149,923.45 and 47,387.53 is: 71,032.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,018.09 : 149,923.45 = 47,387.53 : x
  2. Step 2: Convert to fraction form
    100,018.09/149,923.45 = 47,387.53/x
  3. Step 3: Cross multiply
    100,018.09x = 149,923.45 × 47,387.53
  4. Step 4: Simplify right side
    100,018.09x = 7,104,501,984.58
  5. Step 5: Solve for x
    x = 7,104,501,984.58/100,018.09
  6. Step 6: Final answer
    x = 71,032.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.