Home / 158,024.36-218,065.56-86,390.48

Finding the Fourth Proportional to 158,024.36, 218,065.56 and 86,390.48

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Solution

The fourth proportional to 158,024.36, 218,065.56 and 86,390.48 is: 119,214.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,024.36 : 218,065.56 = 86,390.48 : x
  2. Step 2: Convert to fraction form
    158,024.36/218,065.56 = 86,390.48/x
  3. Step 3: Cross multiply
    158,024.36x = 218,065.56 × 86,390.48
  4. Step 4: Simplify right side
    158,024.36x = 18,838,788,399.87
  5. Step 5: Solve for x
    x = 18,838,788,399.87/158,024.36
  6. Step 6: Final answer
    x = 119,214.46

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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.