Home / 180,853.05-249,576.78-100,278.50

Finding the Fourth Proportional to 180,853.05, 249,576.78 and 100,278.50

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Solution

The fourth proportional to 180,853.05, 249,576.78 and 100,278.50 is: 138,384.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,853.05 : 249,576.78 = 100,278.50 : x
  2. Step 2: Convert to fraction form
    180,853.05/249,576.78 = 100,278.50/x
  3. Step 3: Cross multiply
    180,853.05x = 249,576.78 × 100,278.50
  4. Step 4: Simplify right side
    180,853.05x = 25,027,184,631.84
  5. Step 5: Solve for x
    x = 25,027,184,631.84/180,853.05
  6. Step 6: Final answer
    x = 138,384.09

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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.