Home / 145,043.79-200,157.26-80,509.23

Finding the Fourth Proportional to 145,043.79, 200,157.26 and 80,509.23

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Solution

The fourth proportional to 145,043.79, 200,157.26 and 80,509.23 is: 111,100.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,043.79 : 200,157.26 = 80,509.23 : x
  2. Step 2: Convert to fraction form
    145,043.79/200,157.26 = 80,509.23/x
  3. Step 3: Cross multiply
    145,043.79x = 200,157.26 × 80,509.23
  4. Step 4: Simplify right side
    145,043.79x = 16,114,506,478.96
  5. Step 5: Solve for x
    x = 16,114,506,478.96/145,043.79
  6. Step 6: Final answer
    x = 111,100.98

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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.