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Finding the Fourth Proportional to 152,854.48, 210,935.04 and 91,635.28

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Solution

The fourth proportional to 152,854.48, 210,935.04 and 91,635.28 is: 126,454.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,854.48 : 210,935.04 = 91,635.28 : x
  2. Step 2: Convert to fraction form
    152,854.48/210,935.04 = 91,635.28/x
  3. Step 3: Cross multiply
    152,854.48x = 210,935.04 × 91,635.28
  4. Step 4: Simplify right side
    152,854.48x = 19,329,091,452.21
  5. Step 5: Solve for x
    x = 19,329,091,452.21/152,854.48
  6. Step 6: Final answer
    x = 126,454.20

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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.