Home / 155,984.28-215,258.34-88,015.67

Finding the Fourth Proportional to 155,984.28, 215,258.34 and 88,015.67

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Solution

The fourth proportional to 155,984.28, 215,258.34 and 88,015.67 is: 121,461.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,984.28 : 215,258.34 = 88,015.67 : x
  2. Step 2: Convert to fraction form
    155,984.28/215,258.34 = 88,015.67/x
  3. Step 3: Cross multiply
    155,984.28x = 215,258.34 × 88,015.67
  4. Step 4: Simplify right side
    155,984.28x = 18,946,107,018.19
  5. Step 5: Solve for x
    x = 18,946,107,018.19/155,984.28
  6. Step 6: Final answer
    x = 121,461.64

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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.