Home / 106,128.30-159,192.42-31,248.45

Finding the Fourth Proportional to 106,128.30, 159,192.42 and 31,248.45

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Solution

The fourth proportional to 106,128.30, 159,192.42 and 31,248.45 is: 46,872.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,128.30 : 159,192.42 = 31,248.45 : x
  2. Step 2: Convert to fraction form
    106,128.30/159,192.42 = 31,248.45/x
  3. Step 3: Cross multiply
    106,128.30x = 159,192.42 × 31,248.45
  4. Step 4: Simplify right side
    106,128.30x = 4,974,516,376.75
  5. Step 5: Solve for x
    x = 4,974,516,376.75/106,128.30
  6. Step 6: Final answer
    x = 46,872.67

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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.