Home / 142,447.02-196,568.64-77,903.69

Finding the Fourth Proportional to 142,447.02, 196,568.64 and 77,903.69

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Solution

The fourth proportional to 142,447.02, 196,568.64 and 77,903.69 is: 107,502.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,447.02 : 196,568.64 = 77,903.69 : x
  2. Step 2: Convert to fraction form
    142,447.02/196,568.64 = 77,903.69/x
  3. Step 3: Cross multiply
    142,447.02x = 196,568.64 × 77,903.69
  4. Step 4: Simplify right side
    142,447.02x = 15,313,421,411.44
  5. Step 5: Solve for x
    x = 15,313,421,411.44/142,447.02
  6. Step 6: Final answer
    x = 107,502.57

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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.