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Finding the Fourth Proportional to 144,642.68, 199,583.08 and 90,889.60

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Solution

The fourth proportional to 144,642.68, 199,583.08 and 90,889.60 is: 125,412.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,642.68 : 199,583.08 = 90,889.60 : x
  2. Step 2: Convert to fraction form
    144,642.68/199,583.08 = 90,889.60/x
  3. Step 3: Cross multiply
    144,642.68x = 199,583.08 × 90,889.60
  4. Step 4: Simplify right side
    144,642.68x = 18,140,026,307.97
  5. Step 5: Solve for x
    x = 18,140,026,307.97/144,642.68
  6. Step 6: Final answer
    x = 125,412.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.