Home / 142,236.16-196,269.16-78,570.16

Finding the Fourth Proportional to 142,236.16, 196,269.16 and 78,570.16

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Solution

The fourth proportional to 142,236.16, 196,269.16 and 78,570.16 is: 108,417.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,236.16 : 196,269.16 = 78,570.16 : x
  2. Step 2: Convert to fraction form
    142,236.16/196,269.16 = 78,570.16/x
  3. Step 3: Cross multiply
    142,236.16x = 196,269.16 × 78,570.16
  4. Step 4: Simplify right side
    142,236.16x = 15,420,899,304.27
  5. Step 5: Solve for x
    x = 15,420,899,304.27/142,236.16
  6. Step 6: Final answer
    x = 108,417.57

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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.