Home / 180,698.45-249,360.93-100,125.72

Finding the Fourth Proportional to 180,698.45, 249,360.93 and 100,125.72

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Solution

The fourth proportional to 180,698.45, 249,360.93 and 100,125.72 is: 138,171.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,698.45 : 249,360.93 = 100,125.72 : x
  2. Step 2: Convert to fraction form
    180,698.45/249,360.93 = 100,125.72/x
  3. Step 3: Cross multiply
    180,698.45x = 249,360.93 × 100,125.72
  4. Step 4: Simplify right side
    180,698.45x = 24,967,442,656.12
  5. Step 5: Solve for x
    x = 24,967,442,656.12/180,698.45
  6. Step 6: Final answer
    x = 138,171.87

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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.