Home / 128,960,109.40-193,395,005.70-38,059,629.40

Finding the Fourth Proportional to 128,960,109.40, 193,395,005.70 and 38,059,629.40

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Solution

The fourth proportional to 128,960,109.40, 193,395,005.70 and 38,059,629.40 is: 57,076,116.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,960,109.40 : 193,395,005.70 = 38,059,629.40 : x
  2. Step 2: Convert to fraction form
    128,960,109.40/193,395,005.70 = 38,059,629.40/x
  3. Step 3: Cross multiply
    128,960,109.40x = 193,395,005.70 × 38,059,629.40
  4. Step 4: Simplify right side
    128,960,109.40x = 7,360,542,244,752,887
  5. Step 5: Solve for x
    x = 7,360,542,244,752,887/128,960,109.40
  6. Step 6: Final answer
    x = 57,076,116.63

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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.