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Finding the Fourth Proportional to 98,569.80, 147,964.05 and 61,172.10

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Solution

The fourth proportional to 98,569.80, 147,964.05 and 61,172.10 is: 91,826.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,569.80 : 147,964.05 = 61,172.10 : x
  2. Step 2: Convert to fraction form
    98,569.80/147,964.05 = 61,172.10/x
  3. Step 3: Cross multiply
    98,569.80x = 147,964.05 × 61,172.10
  4. Step 4: Simplify right side
    98,569.80x = 9,051,271,663.01
  5. Step 5: Solve for x
    x = 9,051,271,663.01/98,569.80
  6. Step 6: Final answer
    x = 91,826.01

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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.