Home / 205,810.60-308,715.90-125,631.40

Finding the Fourth Proportional to 205,810.60, 308,715.90 and 125,631.40

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Solution

The fourth proportional to 205,810.60, 308,715.90 and 125,631.40 is: 188,447.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,810.60 : 308,715.90 = 125,631.40 : x
  2. Step 2: Convert to fraction form
    205,810.60/308,715.90 = 125,631.40/x
  3. Step 3: Cross multiply
    205,810.60x = 308,715.90 × 125,631.40
  4. Step 4: Simplify right side
    205,810.60x = 38,784,410,719.26
  5. Step 5: Solve for x
    x = 38,784,410,719.26/205,810.60
  6. Step 6: Final answer
    x = 188,447.10

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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.