Home / 106,328.16-159,454.76-31,428.40

Finding the Fourth Proportional to 106,328.16, 159,454.76 and 31,428.40

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Solution

The fourth proportional to 106,328.16, 159,454.76 and 31,428.40 is: 47,131.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,328.16 : 159,454.76 = 31,428.40 : x
  2. Step 2: Convert to fraction form
    106,328.16/159,454.76 = 31,428.40/x
  3. Step 3: Cross multiply
    106,328.16x = 159,454.76 × 31,428.40
  4. Step 4: Simplify right side
    106,328.16x = 5,011,407,979.18
  5. Step 5: Solve for x
    x = 5,011,407,979.18/106,328.16
  6. Step 6: Final answer
    x = 47,131.52

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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.