Home / 180,905.04-249,619.05-100,319.76

Finding the Fourth Proportional to 180,905.04, 249,619.05 and 100,319.76

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Solution

The fourth proportional to 180,905.04, 249,619.05 and 100,319.76 is: 138,424.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,905.04 : 249,619.05 = 100,319.76 : x
  2. Step 2: Convert to fraction form
    180,905.04/249,619.05 = 100,319.76/x
  3. Step 3: Cross multiply
    180,905.04x = 249,619.05 × 100,319.76
  4. Step 4: Simplify right side
    180,905.04x = 25,041,723,187.43
  5. Step 5: Solve for x
    x = 25,041,723,187.43/180,905.04
  6. Step 6: Final answer
    x = 138,424.69

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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.