Home / 154,295.94-212,971.20-89,777.64

Finding the Fourth Proportional to 154,295.94, 212,971.20 and 89,777.64

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Solution

The fourth proportional to 154,295.94, 212,971.20 and 89,777.64 is: 123,918.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,295.94 : 212,971.20 = 89,777.64 : x
  2. Step 2: Convert to fraction form
    154,295.94/212,971.20 = 89,777.64/x
  3. Step 3: Cross multiply
    154,295.94x = 212,971.20 × 89,777.64
  4. Step 4: Simplify right side
    154,295.94x = 19,120,051,839.46
  5. Step 5: Solve for x
    x = 19,120,051,839.46/154,295.94
  6. Step 6: Final answer
    x = 123,918.05

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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.