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Finding the Fourth Proportional to 170,340.60, 255,510.90 and 102,689.40

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Solution

The fourth proportional to 170,340.60, 255,510.90 and 102,689.40 is: 154,034.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,340.60 : 255,510.90 = 102,689.40 : x
  2. Step 2: Convert to fraction form
    170,340.60/255,510.90 = 102,689.40/x
  3. Step 3: Cross multiply
    170,340.60x = 255,510.90 × 102,689.40
  4. Step 4: Simplify right side
    170,340.60x = 26,238,261,014.46
  5. Step 5: Solve for x
    x = 26,238,261,014.46/170,340.60
  6. Step 6: Final answer
    x = 154,034.10

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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.