Home / 156,981.59-217,205.06-136,880.36

Finding the Fourth Proportional to 156,981.59, 217,205.06 and 136,880.36

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Solution

The fourth proportional to 156,981.59, 217,205.06 and 136,880.36 is: 189,392.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,981.59 : 217,205.06 = 136,880.36 : x
  2. Step 2: Convert to fraction form
    156,981.59/217,205.06 = 136,880.36/x
  3. Step 3: Cross multiply
    156,981.59x = 217,205.06 × 136,880.36
  4. Step 4: Simplify right side
    156,981.59x = 29,731,105,036.19
  5. Step 5: Solve for x
    x = 29,731,105,036.19/156,981.59
  6. Step 6: Final answer
    x = 189,392.31

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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.