Home / 142,376.13-196,483.16-78,718.03

Finding the Fourth Proportional to 142,376.13, 196,483.16 and 78,718.03

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Solution

The fourth proportional to 142,376.13, 196,483.16 and 78,718.03 is: 108,633.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,376.13 : 196,483.16 = 78,718.03 : x
  2. Step 2: Convert to fraction form
    142,376.13/196,483.16 = 78,718.03/x
  3. Step 3: Cross multiply
    142,376.13x = 196,483.16 × 78,718.03
  4. Step 4: Simplify right side
    142,376.13x = 15,466,767,283.37
  5. Step 5: Solve for x
    x = 15,466,767,283.37/142,376.13
  6. Step 6: Final answer
    x = 108,633.15

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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.