Home / 280,113.10-420,169.65-93,124.60

Finding the Fourth Proportional to 280,113.10, 420,169.65 and 93,124.60

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Solution

The fourth proportional to 280,113.10, 420,169.65 and 93,124.60 is: 139,686.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,113.10 : 420,169.65 = 93,124.60 : x
  2. Step 2: Convert to fraction form
    280,113.10/420,169.65 = 93,124.60/x
  3. Step 3: Cross multiply
    280,113.10x = 420,169.65 × 93,124.60
  4. Step 4: Simplify right side
    280,113.10x = 39,128,130,588.39
  5. Step 5: Solve for x
    x = 39,128,130,588.39/280,113.10
  6. Step 6: Final answer
    x = 139,686.90

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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.