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Finding the Fourth Proportional to 105,258.40, 157,810.80 and 42,896.80

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Solution

The fourth proportional to 105,258.40, 157,810.80 and 42,896.80 is: 64,313.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,258.40 : 157,810.80 = 42,896.80 : x
  2. Step 2: Convert to fraction form
    105,258.40/157,810.80 = 42,896.80/x
  3. Step 3: Cross multiply
    105,258.40x = 157,810.80 × 42,896.80
  4. Step 4: Simplify right side
    105,258.40x = 6,769,578,325.44
  5. Step 5: Solve for x
    x = 6,769,578,325.44/105,258.40
  6. Step 6: Final answer
    x = 64,313.90

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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.