Home / 145,875.06-218,725.11-66,890.34

Finding the Fourth Proportional to 145,875.06, 218,725.11 and 66,890.34

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Solution

The fourth proportional to 145,875.06, 218,725.11 and 66,890.34 is: 100,295.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,875.06 : 218,725.11 = 66,890.34 : x
  2. Step 2: Convert to fraction form
    145,875.06/218,725.11 = 66,890.34/x
  3. Step 3: Cross multiply
    145,875.06x = 218,725.11 × 66,890.34
  4. Step 4: Simplify right side
    145,875.06x = 14,630,596,974.44
  5. Step 5: Solve for x
    x = 14,630,596,974.44/145,875.06
  6. Step 6: Final answer
    x = 100,295.40

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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.