Home / 151,053.41-208,437.54-87,379.31

Finding the Fourth Proportional to 151,053.41, 208,437.54 and 87,379.31

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Solution

The fourth proportional to 151,053.41, 208,437.54 and 87,379.31 is: 120,574.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,053.41 : 208,437.54 = 87,379.31 : x
  2. Step 2: Convert to fraction form
    151,053.41/208,437.54 = 87,379.31/x
  3. Step 3: Cross multiply
    151,053.41x = 208,437.54 × 87,379.31
  4. Step 4: Simplify right side
    151,053.41x = 18,213,127,381.11
  5. Step 5: Solve for x
    x = 18,213,127,381.11/151,053.41
  6. Step 6: Final answer
    x = 120,574.09

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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.