Home / 180,900.78-249,626.58-100,328.06

Finding the Fourth Proportional to 180,900.78, 249,626.58 and 100,328.06

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Solution

The fourth proportional to 180,900.78, 249,626.58 and 100,328.06 is: 138,443.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,900.78 : 249,626.58 = 100,328.06 : x
  2. Step 2: Convert to fraction form
    180,900.78/249,626.58 = 100,328.06/x
  3. Step 3: Cross multiply
    180,900.78x = 249,626.58 × 100,328.06
  4. Step 4: Simplify right side
    180,900.78x = 25,044,550,495.83
  5. Step 5: Solve for x
    x = 25,044,550,495.83/180,900.78
  6. Step 6: Final answer
    x = 138,443.57

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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.