Home / 145,031.70-200,164.56-80,515.74

Finding the Fourth Proportional to 145,031.70, 200,164.56 and 80,515.74

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Solution

The fourth proportional to 145,031.70, 200,164.56 and 80,515.74 is: 111,123.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,031.70 : 200,164.56 = 80,515.74 : x
  2. Step 2: Convert to fraction form
    145,031.70/200,164.56 = 80,515.74/x
  3. Step 3: Cross multiply
    145,031.70x = 200,164.56 × 80,515.74
  4. Step 4: Simplify right side
    145,031.70x = 16,116,397,670.17
  5. Step 5: Solve for x
    x = 16,116,397,670.17/145,031.70
  6. Step 6: Final answer
    x = 111,123.28

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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.