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Finding the Fourth Proportional to 180,458.69, 249,033.47 and 99,891.77

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Solution

The fourth proportional to 180,458.69, 249,033.47 and 99,891.77 is: 137,850.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,458.69 : 249,033.47 = 99,891.77 : x
  2. Step 2: Convert to fraction form
    180,458.69/249,033.47 = 99,891.77/x
  3. Step 3: Cross multiply
    180,458.69x = 249,033.47 × 99,891.77
  4. Step 4: Simplify right side
    180,458.69x = 24,876,393,608.08
  5. Step 5: Solve for x
    x = 24,876,393,608.08/180,458.69
  6. Step 6: Final answer
    x = 137,850.90

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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.