Home / 148,569.42-205,056-100,838.16

Finding the Fourth Proportional to 148,569.42, 205,056 and 100,838.16

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Solution

The fourth proportional to 148,569.42, 205,056 and 100,838.16 is: 139,177.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,569.42 : 205,056 = 100,838.16 : x
  2. Step 2: Convert to fraction form
    148,569.42/205,056 = 100,838.16/x
  3. Step 3: Cross multiply
    148,569.42x = 205,056 × 100,838.16
  4. Step 4: Simplify right side
    148,569.42x = 20,677,469,736.96
  5. Step 5: Solve for x
    x = 20,677,469,736.96/148,569.42
  6. Step 6: Final answer
    x = 139,177.16

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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.