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Finding the Fourth Proportional to 143,128.60, 200,117.60 and 143,128.60

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Solution

The fourth proportional to 143,128.60, 200,117.60 and 143,128.60 is: 200,117.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,128.60 : 200,117.60 = 143,128.60 : x
  2. Step 2: Convert to fraction form
    143,128.60/200,117.60 = 143,128.60/x
  3. Step 3: Cross multiply
    143,128.60x = 200,117.60 × 143,128.60
  4. Step 4: Simplify right side
    143,128.60x = 28,642,551,923.36
  5. Step 5: Solve for x
    x = 28,642,551,923.36/143,128.60
  6. Step 6: Final answer
    x = 200,117.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.