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Finding the Fourth Proportional to 235,538.16, 325,037.88 and 128,106

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Solution

The fourth proportional to 235,538.16, 325,037.88 and 128,106 is: 176,783.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,538.16 : 325,037.88 = 128,106 : x
  2. Step 2: Convert to fraction form
    235,538.16/325,037.88 = 128,106/x
  3. Step 3: Cross multiply
    235,538.16x = 325,037.88 × 128,106
  4. Step 4: Simplify right side
    235,538.16x = 41,639,302,655.28
  5. Step 5: Solve for x
    x = 41,639,302,655.28/235,538.16
  6. Step 6: Final answer
    x = 176,783.68

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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.