Home / 136,128.34-187,829.58-79,528.78

Finding the Fourth Proportional to 136,128.34, 187,829.58 and 79,528.78

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Solution

The fourth proportional to 136,128.34, 187,829.58 and 79,528.78 is: 109,733.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,128.34 : 187,829.58 = 79,528.78 : x
  2. Step 2: Convert to fraction form
    136,128.34/187,829.58 = 79,528.78/x
  3. Step 3: Cross multiply
    136,128.34x = 187,829.58 × 79,528.78
  4. Step 4: Simplify right side
    136,128.34x = 14,937,857,345.31
  5. Step 5: Solve for x
    x = 14,937,857,345.31/136,128.34
  6. Step 6: Final answer
    x = 109,733.63

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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.