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Finding the Fourth Proportional to 113,376.60, 170,064.90 and 77,947.20

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Solution

The fourth proportional to 113,376.60, 170,064.90 and 77,947.20 is: 116,920.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,376.60 : 170,064.90 = 77,947.20 : x
  2. Step 2: Convert to fraction form
    113,376.60/170,064.90 = 77,947.20/x
  3. Step 3: Cross multiply
    113,376.60x = 170,064.90 × 77,947.20
  4. Step 4: Simplify right side
    113,376.60x = 13,256,082,773.28
  5. Step 5: Solve for x
    x = 13,256,082,773.28/113,376.60
  6. Step 6: Final answer
    x = 116,920.80

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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.