Home / 128,462.16-192,698.28-39,707.76

Finding the Fourth Proportional to 128,462.16, 192,698.28 and 39,707.76

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Solution

The fourth proportional to 128,462.16, 192,698.28 and 39,707.76 is: 59,563.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,462.16 : 192,698.28 = 39,707.76 : x
  2. Step 2: Convert to fraction form
    128,462.16/192,698.28 = 39,707.76/x
  3. Step 3: Cross multiply
    128,462.16x = 192,698.28 × 39,707.76
  4. Step 4: Simplify right side
    128,462.16x = 7,651,617,054.65
  5. Step 5: Solve for x
    x = 7,651,617,054.65/128,462.16
  6. Step 6: Final answer
    x = 59,563.20

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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.