Home / 102,390.09-141,299.03-57,071.00

Finding the Fourth Proportional to 102,390.09, 141,299.03 and 57,071.00

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Solution

The fourth proportional to 102,390.09, 141,299.03 and 57,071.00 is: 78,758.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,390.09 : 141,299.03 = 57,071.00 : x
  2. Step 2: Convert to fraction form
    102,390.09/141,299.03 = 57,071.00/x
  3. Step 3: Cross multiply
    102,390.09x = 141,299.03 × 57,071.00
  4. Step 4: Simplify right side
    102,390.09x = 8,064,076,642.25
  5. Step 5: Solve for x
    x = 8,064,076,642.25/102,390.09
  6. Step 6: Final answer
    x = 78,758.37

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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.