Home / 102,376.60-153,564.90-66,947.20

Finding the Fourth Proportional to 102,376.60, 153,564.90 and 66,947.20

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Solution

The fourth proportional to 102,376.60, 153,564.90 and 66,947.20 is: 100,420.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,376.60 : 153,564.90 = 66,947.20 : x
  2. Step 2: Convert to fraction form
    102,376.60/153,564.90 = 66,947.20/x
  3. Step 3: Cross multiply
    102,376.60x = 153,564.90 × 66,947.20
  4. Step 4: Simplify right side
    102,376.60x = 10,280,740,073.28
  5. Step 5: Solve for x
    x = 10,280,740,073.28/102,376.60
  6. Step 6: Final answer
    x = 100,420.80

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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.