Home / 142,386.84-196,502.64-81,956.16

Finding the Fourth Proportional to 142,386.84, 196,502.64 and 81,956.16

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Solution

The fourth proportional to 142,386.84, 196,502.64 and 81,956.16 is: 113,104.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,386.84 : 196,502.64 = 81,956.16 : x
  2. Step 2: Convert to fraction form
    142,386.84/196,502.64 = 81,956.16/x
  3. Step 3: Cross multiply
    142,386.84x = 196,502.64 × 81,956.16
  4. Step 4: Simplify right side
    142,386.84x = 16,104,601,804.26
  5. Step 5: Solve for x
    x = 16,104,601,804.26/142,386.84
  6. Step 6: Final answer
    x = 113,104.57

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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.