Home / 145,271.68-200,470.28-80,740.60

Finding the Fourth Proportional to 145,271.68, 200,470.28 and 80,740.60

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Solution

The fourth proportional to 145,271.68, 200,470.28 and 80,740.60 is: 111,419.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,271.68 : 200,470.28 = 80,740.60 : x
  2. Step 2: Convert to fraction form
    145,271.68/200,470.28 = 80,740.60/x
  3. Step 3: Cross multiply
    145,271.68x = 200,470.28 × 80,740.60
  4. Step 4: Simplify right side
    145,271.68x = 16,186,089,784.49
  5. Step 5: Solve for x
    x = 16,186,089,784.49/145,271.68
  6. Step 6: Final answer
    x = 111,419.45

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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.