Home / 158,280.21-218,418.03-86,646.37

Finding the Fourth Proportional to 158,280.21, 218,418.03 and 86,646.37

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Solution

The fourth proportional to 158,280.21, 218,418.03 and 86,646.37 is: 119,567.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,280.21 : 218,418.03 = 86,646.37 : x
  2. Step 2: Convert to fraction form
    158,280.21/218,418.03 = 86,646.37/x
  3. Step 3: Cross multiply
    158,280.21x = 218,418.03 × 86,646.37
  4. Step 4: Simplify right side
    158,280.21x = 18,925,129,442.05
  5. Step 5: Solve for x
    x = 18,925,129,442.05/158,280.21
  6. Step 6: Final answer
    x = 119,567.25

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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.