Home / 154,082.32-212,631-86,100.28

Finding the Fourth Proportional to 154,082.32, 212,631 and 86,100.28

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Solution

The fourth proportional to 154,082.32, 212,631 and 86,100.28 is: 118,816.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,082.32 : 212,631 = 86,100.28 : x
  2. Step 2: Convert to fraction form
    154,082.32/212,631 = 86,100.28/x
  3. Step 3: Cross multiply
    154,082.32x = 212,631 × 86,100.28
  4. Step 4: Simplify right side
    154,082.32x = 18,307,588,636.68
  5. Step 5: Solve for x
    x = 18,307,588,636.68/154,082.32
  6. Step 6: Final answer
    x = 118,816.93

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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.