Home / 145,394.55-200,643.36-80,864.37

Finding the Fourth Proportional to 145,394.55, 200,643.36 and 80,864.37

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Solution

The fourth proportional to 145,394.55, 200,643.36 and 80,864.37 is: 111,592.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,394.55 : 200,643.36 = 80,864.37 : x
  2. Step 2: Convert to fraction form
    145,394.55/200,643.36 = 80,864.37/x
  3. Step 3: Cross multiply
    145,394.55x = 200,643.36 × 80,864.37
  4. Step 4: Simplify right side
    145,394.55x = 16,224,898,901.08
  5. Step 5: Solve for x
    x = 16,224,898,901.08/145,394.55
  6. Step 6: Final answer
    x = 111,592.21

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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.