Home / 100,036.65-138,069.05-64,271.37

Finding the Fourth Proportional to 100,036.65, 138,069.05 and 64,271.37

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Solution

The fourth proportional to 100,036.65, 138,069.05 and 64,271.37 is: 88,706.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,036.65 : 138,069.05 = 64,271.37 : x
  2. Step 2: Convert to fraction form
    100,036.65/138,069.05 = 64,271.37/x
  3. Step 3: Cross multiply
    100,036.65x = 138,069.05 × 64,271.37
  4. Step 4: Simplify right side
    100,036.65x = 8,873,886,676.74
  5. Step 5: Solve for x
    x = 8,873,886,676.74/100,036.65
  6. Step 6: Final answer
    x = 88,706.36

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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.