Home / 180,701.85-249,364.82-100,128.65

Finding the Fourth Proportional to 180,701.85, 249,364.82 and 100,128.65

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Solution

The fourth proportional to 180,701.85, 249,364.82 and 100,128.65 is: 138,175.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,701.85 : 249,364.82 = 100,128.65 : x
  2. Step 2: Convert to fraction form
    180,701.85/249,364.82 = 100,128.65/x
  3. Step 3: Cross multiply
    180,701.85x = 249,364.82 × 100,128.65
  4. Step 4: Simplify right side
    180,701.85x = 24,968,563,657.83
  5. Step 5: Solve for x
    x = 24,968,563,657.83/180,701.85
  6. Step 6: Final answer
    x = 138,175.47

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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.