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Finding the Fourth Proportional to 162,438.92, 243,870.60 and 130,435.08

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Solution

The fourth proportional to 162,438.92, 243,870.60 and 130,435.08 is: 195,823.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,438.92 : 243,870.60 = 130,435.08 : x
  2. Step 2: Convert to fraction form
    162,438.92/243,870.60 = 130,435.08/x
  3. Step 3: Cross multiply
    162,438.92x = 243,870.60 × 130,435.08
  4. Step 4: Simplify right side
    162,438.92x = 31,809,281,220.65
  5. Step 5: Solve for x
    x = 31,809,281,220.65/162,438.92
  6. Step 6: Final answer
    x = 195,823.03

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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.