Home / 122,490.80-183,782.04-83,416.40

Finding the Fourth Proportional to 122,490.80, 183,782.04 and 83,416.40

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Solution

The fourth proportional to 122,490.80, 183,782.04 and 83,416.40 is: 125,155.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,490.80 : 183,782.04 = 83,416.40 : x
  2. Step 2: Convert to fraction form
    122,490.80/183,782.04 = 83,416.40/x
  3. Step 3: Cross multiply
    122,490.80x = 183,782.04 × 83,416.40
  4. Step 4: Simplify right side
    122,490.80x = 15,330,436,161.46
  5. Step 5: Solve for x
    x = 15,330,436,161.46/122,490.80
  6. Step 6: Final answer
    x = 125,155.82

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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.