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Finding the Fourth Proportional to 162,912.60, 244,368.90 and 78,737.40

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Solution

The fourth proportional to 162,912.60, 244,368.90 and 78,737.40 is: 118,106.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,912.60 : 244,368.90 = 78,737.40 : x
  2. Step 2: Convert to fraction form
    162,912.60/244,368.90 = 78,737.40/x
  3. Step 3: Cross multiply
    162,912.60x = 244,368.90 × 78,737.40
  4. Step 4: Simplify right side
    162,912.60x = 19,240,971,826.86
  5. Step 5: Solve for x
    x = 19,240,971,826.86/162,912.60
  6. Step 6: Final answer
    x = 118,106.10

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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.