Home / 154,041.48-212,582.88-85,131.54

Finding the Fourth Proportional to 154,041.48, 212,582.88 and 85,131.54

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Solution

The fourth proportional to 154,041.48, 212,582.88 and 85,131.54 is: 117,484.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,041.48 : 212,582.88 = 85,131.54 : x
  2. Step 2: Convert to fraction form
    154,041.48/212,582.88 = 85,131.54/x
  3. Step 3: Cross multiply
    154,041.48x = 212,582.88 × 85,131.54
  4. Step 4: Simplify right side
    154,041.48x = 18,097,507,952.04
  5. Step 5: Solve for x
    x = 18,097,507,952.04/154,041.48
  6. Step 6: Final answer
    x = 117,484.64

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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.