Home / 280,095.60-420,143.40-93,107.10

Finding the Fourth Proportional to 280,095.60, 420,143.40 and 93,107.10

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Solution

The fourth proportional to 280,095.60, 420,143.40 and 93,107.10 is: 139,660.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,095.60 : 420,143.40 = 93,107.10 : x
  2. Step 2: Convert to fraction form
    280,095.60/420,143.40 = 93,107.10/x
  3. Step 3: Cross multiply
    280,095.60x = 420,143.40 × 93,107.10
  4. Step 4: Simplify right side
    280,095.60x = 39,118,333,558.14
  5. Step 5: Solve for x
    x = 39,118,333,558.14/280,095.60
  6. Step 6: Final answer
    x = 139,660.65

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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.