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Finding the Fourth Proportional to 145,186.55, 199,893.98 and 123,880.31

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Solution

The fourth proportional to 145,186.55, 199,893.98 and 123,880.31 is: 170,559.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,186.55 : 199,893.98 = 123,880.31 : x
  2. Step 2: Convert to fraction form
    145,186.55/199,893.98 = 123,880.31/x
  3. Step 3: Cross multiply
    145,186.55x = 199,893.98 × 123,880.31
  4. Step 4: Simplify right side
    145,186.55x = 24,762,927,519.76
  5. Step 5: Solve for x
    x = 24,762,927,519.76/145,186.55
  6. Step 6: Final answer
    x = 170,559.38

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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.