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Finding the Fourth Proportional to 117,707.70, 176,561.55 and 42,912.30

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Solution

The fourth proportional to 117,707.70, 176,561.55 and 42,912.30 is: 64,368.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,707.70 : 176,561.55 = 42,912.30 : x
  2. Step 2: Convert to fraction form
    117,707.70/176,561.55 = 42,912.30/x
  3. Step 3: Cross multiply
    117,707.70x = 176,561.55 × 42,912.30
  4. Step 4: Simplify right side
    117,707.70x = 7,576,662,202.07
  5. Step 5: Solve for x
    x = 7,576,662,202.07/117,707.70
  6. Step 6: Final answer
    x = 64,368.45

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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.