Home / 148,643.10-205,191.47-91,291.72

Finding the Fourth Proportional to 148,643.10, 205,191.47 and 91,291.72

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Solution

The fourth proportional to 148,643.10, 205,191.47 and 91,291.72 is: 126,021.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,643.10 : 205,191.47 = 91,291.72 : x
  2. Step 2: Convert to fraction form
    148,643.10/205,191.47 = 91,291.72/x
  3. Step 3: Cross multiply
    148,643.10x = 205,191.47 × 91,291.72
  4. Step 4: Simplify right side
    148,643.10x = 18,732,282,225.63
  5. Step 5: Solve for x
    x = 18,732,282,225.63/148,643.10
  6. Step 6: Final answer
    x = 126,021.88

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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.