Home / 145,971.38-201,440.52-78,903.38

Finding the Fourth Proportional to 145,971.38, 201,440.52 and 78,903.38

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Solution

The fourth proportional to 145,971.38, 201,440.52 and 78,903.38 is: 108,886.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,971.38 : 201,440.52 = 78,903.38 : x
  2. Step 2: Convert to fraction form
    145,971.38/201,440.52 = 78,903.38/x
  3. Step 3: Cross multiply
    145,971.38x = 201,440.52 × 78,903.38
  4. Step 4: Simplify right side
    145,971.38x = 15,894,336,889.76
  5. Step 5: Solve for x
    x = 15,894,336,889.76/145,971.38
  6. Step 6: Final answer
    x = 108,886.67

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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.