Home / 127,985.60-192,208.80-123,838.40

Finding the Fourth Proportional to 127,985.60, 192,208.80 and 123,838.40

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Solution

The fourth proportional to 127,985.60, 192,208.80 and 123,838.40 is: 185,980.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,985.60 : 192,208.80 = 123,838.40 : x
  2. Step 2: Convert to fraction form
    127,985.60/192,208.80 = 123,838.40/x
  3. Step 3: Cross multiply
    127,985.60x = 192,208.80 × 123,838.40
  4. Step 4: Simplify right side
    127,985.60x = 23,802,830,257.92
  5. Step 5: Solve for x
    x = 23,802,830,257.92/127,985.60
  6. Step 6: Final answer
    x = 185,980.53

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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.