Home / 200,795.12-301,284.60-86,977.72

Finding the Fourth Proportional to 200,795.12, 301,284.60 and 86,977.72

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Solution

The fourth proportional to 200,795.12, 301,284.60 and 86,977.72 is: 130,506.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,795.12 : 301,284.60 = 86,977.72 : x
  2. Step 2: Convert to fraction form
    200,795.12/301,284.60 = 86,977.72/x
  3. Step 3: Cross multiply
    200,795.12x = 301,284.60 × 86,977.72
  4. Step 4: Simplify right side
    200,795.12x = 26,205,047,579.11
  5. Step 5: Solve for x
    x = 26,205,047,579.11/200,795.12
  6. Step 6: Final answer
    x = 130,506.40

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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.