Home / 145,034.38-200,147.25-81,378.10

Finding the Fourth Proportional to 145,034.38, 200,147.25 and 81,378.10

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Solution

The fourth proportional to 145,034.38, 200,147.25 and 81,378.10 is: 112,301.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,034.38 : 200,147.25 = 81,378.10 : x
  2. Step 2: Convert to fraction form
    145,034.38/200,147.25 = 81,378.10/x
  3. Step 3: Cross multiply
    145,034.38x = 200,147.25 × 81,378.10
  4. Step 4: Simplify right side
    145,034.38x = 16,287,602,925.23
  5. Step 5: Solve for x
    x = 16,287,602,925.23/145,034.38
  6. Step 6: Final answer
    x = 112,301.67

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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.