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Finding the Fourth Proportional to 170,038.60, 255,057.90 and 102,387.40

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Solution

The fourth proportional to 170,038.60, 255,057.90 and 102,387.40 is: 153,581.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,038.60 : 255,057.90 = 102,387.40 : x
  2. Step 2: Convert to fraction form
    170,038.60/255,057.90 = 102,387.40/x
  3. Step 3: Cross multiply
    170,038.60x = 255,057.90 × 102,387.40
  4. Step 4: Simplify right side
    170,038.60x = 26,114,715,230.46
  5. Step 5: Solve for x
    x = 26,114,715,230.46/170,038.60
  6. Step 6: Final answer
    x = 153,581.10

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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.