Home / 151,336.63-208,869.06-87,711.31

Finding the Fourth Proportional to 151,336.63, 208,869.06 and 87,711.31

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Solution

The fourth proportional to 151,336.63, 208,869.06 and 87,711.31 is: 121,055.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,336.63 : 208,869.06 = 87,711.31 : x
  2. Step 2: Convert to fraction form
    151,336.63/208,869.06 = 87,711.31/x
  3. Step 3: Cross multiply
    151,336.63x = 208,869.06 × 87,711.31
  4. Step 4: Simplify right side
    151,336.63x = 18,320,178,871.07
  5. Step 5: Solve for x
    x = 18,320,178,871.07/151,336.63
  6. Step 6: Final answer
    x = 121,055.81

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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.