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Finding the Fourth Proportional to 143,678.09, 215,535.01 and 48,901

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Solution

The fourth proportional to 143,678.09, 215,535.01 and 48,901 is: 73,357.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,678.09 : 215,535.01 = 48,901 : x
  2. Step 2: Convert to fraction form
    143,678.09/215,535.01 = 48,901/x
  3. Step 3: Cross multiply
    143,678.09x = 215,535.01 × 48,901
  4. Step 4: Simplify right side
    143,678.09x = 10,539,877,524.01
  5. Step 5: Solve for x
    x = 10,539,877,524.01/143,678.09
  6. Step 6: Final answer
    x = 73,357.58

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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.