Home / 98,728.11-136,103.09-70,384.59

Finding the Fourth Proportional to 98,728.11, 136,103.09 and 70,384.59

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Solution

The fourth proportional to 98,728.11, 136,103.09 and 70,384.59 is: 97,029.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,728.11 : 136,103.09 = 70,384.59 : x
  2. Step 2: Convert to fraction form
    98,728.11/136,103.09 = 70,384.59/x
  3. Step 3: Cross multiply
    98,728.11x = 136,103.09 × 70,384.59
  4. Step 4: Simplify right side
    98,728.11x = 9,579,559,835.46
  5. Step 5: Solve for x
    x = 9,579,559,835.46/98,728.11
  6. Step 6: Final answer
    x = 97,029.71

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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.