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Finding the Fourth Proportional to 147,246.76, 220,433.76 and 90,905.72

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Solution

The fourth proportional to 147,246.76, 220,433.76 and 90,905.72 is: 136,089.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,246.76 : 220,433.76 = 90,905.72 : x
  2. Step 2: Convert to fraction form
    147,246.76/220,433.76 = 90,905.72/x
  3. Step 3: Cross multiply
    147,246.76x = 220,433.76 × 90,905.72
  4. Step 4: Simplify right side
    147,246.76x = 20,038,689,665.11
  5. Step 5: Solve for x
    x = 20,038,689,665.11/147,246.76
  6. Step 6: Final answer
    x = 136,089.17

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1.5x scale

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.