Home / 128,272.48-192,430.32-39,523.36

Finding the Fourth Proportional to 128,272.48, 192,430.32 and 39,523.36

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Solution

The fourth proportional to 128,272.48, 192,430.32 and 39,523.36 is: 59,291.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,272.48 : 192,430.32 = 39,523.36 : x
  2. Step 2: Convert to fraction form
    128,272.48/192,430.32 = 39,523.36/x
  3. Step 3: Cross multiply
    128,272.48x = 192,430.32 × 39,523.36
  4. Step 4: Simplify right side
    128,272.48x = 7,605,492,812.28
  5. Step 5: Solve for x
    x = 7,605,492,812.28/128,272.48
  6. Step 6: Final answer
    x = 59,291.70

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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.