Home / 105,428.40-158,142.60-26,545.20

Finding the Fourth Proportional to 105,428.40, 158,142.60 and 26,545.20

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Solution

The fourth proportional to 105,428.40, 158,142.60 and 26,545.20 is: 39,817.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,428.40 : 158,142.60 = 26,545.20 : x
  2. Step 2: Convert to fraction form
    105,428.40/158,142.60 = 26,545.20/x
  3. Step 3: Cross multiply
    105,428.40x = 158,142.60 × 26,545.20
  4. Step 4: Simplify right side
    105,428.40x = 4,197,926,945.52
  5. Step 5: Solve for x
    x = 4,197,926,945.52/105,428.40
  6. Step 6: Final answer
    x = 39,817.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.