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Finding the Fourth Proportional to 132,639.84, 183,081.60 and 105,968.16

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Solution

The fourth proportional to 132,639.84, 183,081.60 and 105,968.16 is: 146,266.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,639.84 : 183,081.60 = 105,968.16 : x
  2. Step 2: Convert to fraction form
    132,639.84/183,081.60 = 105,968.16/x
  3. Step 3: Cross multiply
    132,639.84x = 183,081.60 × 105,968.16
  4. Step 4: Simplify right side
    132,639.84x = 19,400,820,281.86
  5. Step 5: Solve for x
    x = 19,400,820,281.86/132,639.84
  6. Step 6: Final answer
    x = 146,266.92

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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.