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Finding the Fourth Proportional to 159,541.80, 239,312.70 and 130,017.30

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Solution

The fourth proportional to 159,541.80, 239,312.70 and 130,017.30 is: 195,025.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,541.80 : 239,312.70 = 130,017.30 : x
  2. Step 2: Convert to fraction form
    159,541.80/239,312.70 = 130,017.30/x
  3. Step 3: Cross multiply
    159,541.80x = 239,312.70 × 130,017.30
  4. Step 4: Simplify right side
    159,541.80x = 31,114,791,109.71
  5. Step 5: Solve for x
    x = 31,114,791,109.71/159,541.80
  6. Step 6: Final answer
    x = 195,025.95

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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.