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Finding the Fourth Proportional to 117,687.40, 162,412.16 and 66,700.23

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Solution

The fourth proportional to 117,687.40, 162,412.16 and 66,700.23 is: 92,048.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,687.40 : 162,412.16 = 66,700.23 : x
  2. Step 2: Convert to fraction form
    117,687.40/162,412.16 = 66,700.23/x
  3. Step 3: Cross multiply
    117,687.40x = 162,412.16 × 66,700.23
  4. Step 4: Simplify right side
    117,687.40x = 10,832,927,484.25
  5. Step 5: Solve for x
    x = 10,832,927,484.25/117,687.40
  6. Step 6: Final answer
    x = 92,048.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.