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Finding the Fourth Proportional to 99,541.45, 137,395.43 and 65,574.73

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Solution

The fourth proportional to 99,541.45, 137,395.43 and 65,574.73 is: 90,511.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,541.45 : 137,395.43 = 65,574.73 : x
  2. Step 2: Convert to fraction form
    99,541.45/137,395.43 = 65,574.73/x
  3. Step 3: Cross multiply
    99,541.45x = 137,395.43 × 65,574.73
  4. Step 4: Simplify right side
    99,541.45x = 9,009,668,225.48
  5. Step 5: Solve for x
    x = 9,009,668,225.48/99,541.45
  6. Step 6: Final answer
    x = 90,511.72

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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.