Home / 102,870.90-141,974.91-57,551.40

Finding the Fourth Proportional to 102,870.90, 141,974.91 and 57,551.40

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Solution

The fourth proportional to 102,870.90, 141,974.91 and 57,551.40 is: 79,428.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,870.90 : 141,974.91 = 57,551.40 : x
  2. Step 2: Convert to fraction form
    102,870.90/141,974.91 = 57,551.40/x
  3. Step 3: Cross multiply
    102,870.90x = 141,974.91 × 57,551.40
  4. Step 4: Simplify right side
    102,870.90x = 8,170,854,835.37
  5. Step 5: Solve for x
    x = 8,170,854,835.37/102,870.90
  6. Step 6: Final answer
    x = 79,428.24

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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.