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Finding the Fourth Proportional to 149,915.61, 206,858.61 and 89,510.67

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Solution

The fourth proportional to 149,915.61, 206,858.61 and 89,510.67 is: 123,509.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,915.61 : 206,858.61 = 89,510.67 : x
  2. Step 2: Convert to fraction form
    149,915.61/206,858.61 = 89,510.67/x
  3. Step 3: Cross multiply
    149,915.61x = 206,858.61 × 89,510.67
  4. Step 4: Simplify right side
    149,915.61x = 18,516,052,776.37
  5. Step 5: Solve for x
    x = 18,516,052,776.37/149,915.61
  6. Step 6: Final answer
    x = 123,509.84

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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.