Home / 138,830.37-191,585.93-75,168.15

Finding the Fourth Proportional to 138,830.37, 191,585.93 and 75,168.15

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Solution

The fourth proportional to 138,830.37, 191,585.93 and 75,168.15 is: 103,732.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,830.37 : 191,585.93 = 75,168.15 : x
  2. Step 2: Convert to fraction form
    138,830.37/191,585.93 = 75,168.15/x
  3. Step 3: Cross multiply
    138,830.37x = 191,585.93 × 75,168.15
  4. Step 4: Simplify right side
    138,830.37x = 14,401,159,548.29
  5. Step 5: Solve for x
    x = 14,401,159,548.29/138,830.37
  6. Step 6: Final answer
    x = 103,732.05

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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.