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Finding the Fourth Proportional to 162,420.40, 243,630.60 and 79,476.40

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Solution

The fourth proportional to 162,420.40, 243,630.60 and 79,476.40 is: 119,214.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,420.40 : 243,630.60 = 79,476.40 : x
  2. Step 2: Convert to fraction form
    162,420.40/243,630.60 = 79,476.40/x
  3. Step 3: Cross multiply
    162,420.40x = 243,630.60 × 79,476.40
  4. Step 4: Simplify right side
    162,420.40x = 19,362,883,017.84
  5. Step 5: Solve for x
    x = 19,362,883,017.84/162,420.40
  6. Step 6: Final answer
    x = 119,214.60

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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.