Home / 102,720.06-141,748.59-57,389.10

Finding the Fourth Proportional to 102,720.06, 141,748.59 and 57,389.10

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Solution

The fourth proportional to 102,720.06, 141,748.59 and 57,389.10 is: 79,194.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,720.06 : 141,748.59 = 57,389.10 : x
  2. Step 2: Convert to fraction form
    102,720.06/141,748.59 = 57,389.10/x
  3. Step 3: Cross multiply
    102,720.06x = 141,748.59 × 57,389.10
  4. Step 4: Simplify right side
    102,720.06x = 8,134,824,006.37
  5. Step 5: Solve for x
    x = 8,134,824,006.37/102,720.06
  6. Step 6: Final answer
    x = 79,194.11

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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.