Home / 109,856.50-151,455.36-87,270.46

Finding the Fourth Proportional to 109,856.50, 151,455.36 and 87,270.46

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Solution

The fourth proportional to 109,856.50, 151,455.36 and 87,270.46 is: 120,316.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,856.50 : 151,455.36 = 87,270.46 : x
  2. Step 2: Convert to fraction form
    109,856.50/151,455.36 = 87,270.46/x
  3. Step 3: Cross multiply
    109,856.50x = 151,455.36 × 87,270.46
  4. Step 4: Simplify right side
    109,856.50x = 13,217,578,936.67
  5. Step 5: Solve for x
    x = 13,217,578,936.67/109,856.50
  6. Step 6: Final answer
    x = 120,316.77

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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.