Home / 145,971.32-201,440.33-78,903.32

Finding the Fourth Proportional to 145,971.32, 201,440.33 and 78,903.32

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Solution

The fourth proportional to 145,971.32, 201,440.33 and 78,903.32 is: 108,886.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,971.32 : 201,440.33 = 78,903.32 : x
  2. Step 2: Convert to fraction form
    145,971.32/201,440.33 = 78,903.32/x
  3. Step 3: Cross multiply
    145,971.32x = 201,440.33 × 78,903.32
  4. Step 4: Simplify right side
    145,971.32x = 15,894,311,016.15
  5. Step 5: Solve for x
    x = 15,894,311,016.15/145,971.32
  6. Step 6: Final answer
    x = 108,886.53

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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.