Home / 280,133.76-420,204.28-93,145.26

Finding the Fourth Proportional to 280,133.76, 420,204.28 and 93,145.26

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Solution

The fourth proportional to 280,133.76, 420,204.28 and 93,145.26 is: 139,719.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,133.76 : 420,204.28 = 93,145.26 : x
  2. Step 2: Convert to fraction form
    280,133.76/420,204.28 = 93,145.26/x
  3. Step 3: Cross multiply
    280,133.76x = 420,204.28 × 93,145.26
  4. Step 4: Simplify right side
    280,133.76x = 39,140,036,913.71
  5. Step 5: Solve for x
    x = 39,140,036,913.71/280,133.76
  6. Step 6: Final answer
    x = 139,719.10

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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.