Home / 145,061.38-200,188.16-81,403.89

Finding the Fourth Proportional to 145,061.38, 200,188.16 and 81,403.89

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Solution

The fourth proportional to 145,061.38, 200,188.16 and 81,403.89 is: 112,339.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,061.38 : 200,188.16 = 81,403.89 : x
  2. Step 2: Convert to fraction form
    145,061.38/200,188.16 = 81,403.89/x
  3. Step 3: Cross multiply
    145,061.38x = 200,188.16 × 81,403.89
  4. Step 4: Simplify right side
    145,061.38x = 16,296,094,955.94
  5. Step 5: Solve for x
    x = 16,296,094,955.94/145,061.38
  6. Step 6: Final answer
    x = 112,339.31

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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.