Home / 205,059.48-307,156.86-130,140.12

Finding the Fourth Proportional to 205,059.48, 307,156.86 and 130,140.12

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Solution

The fourth proportional to 205,059.48, 307,156.86 and 130,140.12 is: 194,935.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,059.48 : 307,156.86 = 130,140.12 : x
  2. Step 2: Convert to fraction form
    205,059.48/307,156.86 = 130,140.12/x
  3. Step 3: Cross multiply
    205,059.48x = 307,156.86 × 130,140.12
  4. Step 4: Simplify right side
    205,059.48x = 39,973,430,619.22
  5. Step 5: Solve for x
    x = 39,973,430,619.22/205,059.48
  6. Step 6: Final answer
    x = 194,935.78

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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.