Home / 127,128.08-190,693.64-38,385.50

Finding the Fourth Proportional to 127,128.08, 190,693.64 and 38,385.50

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Solution

The fourth proportional to 127,128.08, 190,693.64 and 38,385.50 is: 57,578.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,128.08 : 190,693.64 = 38,385.50 : x
  2. Step 2: Convert to fraction form
    127,128.08/190,693.64 = 38,385.50/x
  3. Step 3: Cross multiply
    127,128.08x = 190,693.64 × 38,385.50
  4. Step 4: Simplify right side
    127,128.08x = 7,319,869,860.72
  5. Step 5: Solve for x
    x = 7,319,869,860.72/127,128.08
  6. Step 6: Final answer
    x = 57,578.70

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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.