Home / 131,782.32-197,478-69,263.28

Finding the Fourth Proportional to 131,782.32, 197,478 and 69,263.28

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Solution

The fourth proportional to 131,782.32, 197,478 and 69,263.28 is: 103,792.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,782.32 : 197,478 = 69,263.28 : x
  2. Step 2: Convert to fraction form
    131,782.32/197,478 = 69,263.28/x
  3. Step 3: Cross multiply
    131,782.32x = 197,478 × 69,263.28
  4. Step 4: Simplify right side
    131,782.32x = 13,677,974,007.84
  5. Step 5: Solve for x
    x = 13,677,974,007.84/131,782.32
  6. Step 6: Final answer
    x = 103,792.18

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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.