Home / 145,100.62-200,280.68-87,740.05

Finding the Fourth Proportional to 145,100.62, 200,280.68 and 87,740.05

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Solution

The fourth proportional to 145,100.62, 200,280.68 and 87,740.05 is: 121,106.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,100.62 : 200,280.68 = 87,740.05 : x
  2. Step 2: Convert to fraction form
    145,100.62/200,280.68 = 87,740.05/x
  3. Step 3: Cross multiply
    145,100.62x = 200,280.68 × 87,740.05
  4. Step 4: Simplify right side
    145,100.62x = 17,572,636,113.97
  5. Step 5: Solve for x
    x = 17,572,636,113.97/145,100.62
  6. Step 6: Final answer
    x = 121,106.56

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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.