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Finding the Fourth Proportional to 180,889.58, 249,642.57 and 100,343.10

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Solution

The fourth proportional to 180,889.58, 249,642.57 and 100,343.10 is: 138,481.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,889.58 : 249,642.57 = 100,343.10 : x
  2. Step 2: Convert to fraction form
    180,889.58/249,642.57 = 100,343.10/x
  3. Step 3: Cross multiply
    180,889.58x = 249,642.57 × 100,343.10
  4. Step 4: Simplify right side
    180,889.58x = 25,049,909,365.77
  5. Step 5: Solve for x
    x = 25,049,909,365.77/180,889.58
  6. Step 6: Final answer
    x = 138,481.77

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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.