Home / 145,109.52-200,253.36-87,740.64

Finding the Fourth Proportional to 145,109.52, 200,253.36 and 87,740.64

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Solution

The fourth proportional to 145,109.52, 200,253.36 and 87,740.64 is: 121,083.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,109.52 : 200,253.36 = 87,740.64 : x
  2. Step 2: Convert to fraction form
    145,109.52/200,253.36 = 87,740.64/x
  3. Step 3: Cross multiply
    145,109.52x = 200,253.36 × 87,740.64
  4. Step 4: Simplify right side
    145,109.52x = 17,570,357,968.55
  5. Step 5: Solve for x
    x = 17,570,357,968.55/145,109.52
  6. Step 6: Final answer
    x = 121,083.43

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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.