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Finding the Fourth Proportional to 201,235.10, 301,852.65 and 90,643.10

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Solution

The fourth proportional to 201,235.10, 301,852.65 and 90,643.10 is: 135,964.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,235.10 : 301,852.65 = 90,643.10 : x
  2. Step 2: Convert to fraction form
    201,235.10/301,852.65 = 90,643.10/x
  3. Step 3: Cross multiply
    201,235.10x = 301,852.65 × 90,643.10
  4. Step 4: Simplify right side
    201,235.10x = 27,360,859,939.22
  5. Step 5: Solve for x
    x = 27,360,859,939.22/201,235.10
  6. Step 6: Final answer
    x = 135,964.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.