Home / 146,021.40-201,509.52-78,953.40

Finding the Fourth Proportional to 146,021.40, 201,509.52 and 78,953.40

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Solution

The fourth proportional to 146,021.40, 201,509.52 and 78,953.40 is: 108,955.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,021.40 : 201,509.52 = 78,953.40 : x
  2. Step 2: Convert to fraction form
    146,021.40/201,509.52 = 78,953.40/x
  3. Step 3: Cross multiply
    146,021.40x = 201,509.52 × 78,953.40
  4. Step 4: Simplify right side
    146,021.40x = 15,909,861,736.37
  5. Step 5: Solve for x
    x = 15,909,861,736.37/146,021.40
  6. Step 6: Final answer
    x = 108,955.69

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1.5x scale

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.