Home / 158,132.40-218,215.80-86,513.82

Finding the Fourth Proportional to 158,132.40, 218,215.80 and 86,513.82

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Solution

The fourth proportional to 158,132.40, 218,215.80 and 86,513.82 is: 119,385.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,132.40 : 218,215.80 = 86,513.82 : x
  2. Step 2: Convert to fraction form
    158,132.40/218,215.80 = 86,513.82/x
  3. Step 3: Cross multiply
    158,132.40x = 218,215.80 × 86,513.82
  4. Step 4: Simplify right side
    158,132.40x = 18,878,682,442.36
  5. Step 5: Solve for x
    x = 18,878,682,442.36/158,132.40
  6. Step 6: Final answer
    x = 119,385.29

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1.5x scale

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.