Home / 131,487.40-197,328.30-87,099.40

Finding the Fourth Proportional to 131,487.40, 197,328.30 and 87,099.40

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Solution

The fourth proportional to 131,487.40, 197,328.30 and 87,099.40 is: 130,713.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,487.40 : 197,328.30 = 87,099.40 : x
  2. Step 2: Convert to fraction form
    131,487.40/197,328.30 = 87,099.40/x
  3. Step 3: Cross multiply
    131,487.40x = 197,328.30 × 87,099.40
  4. Step 4: Simplify right side
    131,487.40x = 17,187,176,533.02
  5. Step 5: Solve for x
    x = 17,187,176,533.02/131,487.40
  6. Step 6: Final answer
    x = 130,713.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.