Home / 158,038.39-218,089.96-86,418.19

Finding the Fourth Proportional to 158,038.39, 218,089.96 and 86,418.19

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Solution

The fourth proportional to 158,038.39, 218,089.96 and 86,418.19 is: 119,255.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,038.39 : 218,089.96 = 86,418.19 : x
  2. Step 2: Convert to fraction form
    158,038.39/218,089.96 = 86,418.19/x
  3. Step 3: Cross multiply
    158,038.39x = 218,089.96 × 86,418.19
  4. Step 4: Simplify right side
    158,038.39x = 18,846,939,600.37
  5. Step 5: Solve for x
    x = 18,846,939,600.37/158,038.39
  6. Step 6: Final answer
    x = 119,255.45

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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.