Home / 130,005.75-195,008.63-31,509.75

Finding the Fourth Proportional to 130,005.75, 195,008.63 and 31,509.75

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Solution

The fourth proportional to 130,005.75, 195,008.63 and 31,509.75 is: 47,264.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,005.75 : 195,008.63 = 31,509.75 : x
  2. Step 2: Convert to fraction form
    130,005.75/195,008.63 = 31,509.75/x
  3. Step 3: Cross multiply
    130,005.75x = 195,008.63 × 31,509.75
  4. Step 4: Simplify right side
    130,005.75x = 6,144,673,021.59
  5. Step 5: Solve for x
    x = 6,144,673,021.59/130,005.75
  6. Step 6: Final answer
    x = 47,264.63

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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.