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Finding the Fourth Proportional to 98,812.81, 147,928.52 and 61,252.30

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Solution

The fourth proportional to 98,812.81, 147,928.52 and 61,252.30 is: 91,698.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,812.81 : 147,928.52 = 61,252.30 : x
  2. Step 2: Convert to fraction form
    98,812.81/147,928.52 = 61,252.30/x
  3. Step 3: Cross multiply
    98,812.81x = 147,928.52 × 61,252.30
  4. Step 4: Simplify right side
    98,812.81x = 9,060,961,868.91
  5. Step 5: Solve for x
    x = 9,060,961,868.91/98,812.81
  6. Step 6: Final answer
    x = 91,698.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.