Home / 138,475.63-191,097.21-77,225.69

Finding the Fourth Proportional to 138,475.63, 191,097.21 and 77,225.69

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Solution

The fourth proportional to 138,475.63, 191,097.21 and 77,225.69 is: 106,571.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,475.63 : 191,097.21 = 77,225.69 : x
  2. Step 2: Convert to fraction form
    138,475.63/191,097.21 = 77,225.69/x
  3. Step 3: Cross multiply
    138,475.63x = 191,097.21 × 77,225.69
  4. Step 4: Simplify right side
    138,475.63x = 14,757,613,513.20
  5. Step 5: Solve for x
    x = 14,757,613,513.20/138,475.63
  6. Step 6: Final answer
    x = 106,571.92

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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.