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Finding the Fourth Proportional to 201,428.76, 302,143.14 and 94,746.40

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Solution

The fourth proportional to 201,428.76, 302,143.14 and 94,746.40 is: 142,119.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,428.76 : 302,143.14 = 94,746.40 : x
  2. Step 2: Convert to fraction form
    201,428.76/302,143.14 = 94,746.40/x
  3. Step 3: Cross multiply
    201,428.76x = 302,143.14 × 94,746.40
  4. Step 4: Simplify right side
    201,428.76x = 28,626,974,799.70
  5. Step 5: Solve for x
    x = 28,626,974,799.70/201,428.76
  6. Step 6: Final answer
    x = 142,119.60

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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.