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Finding the Fourth Proportional to 104,303.16, 143,911.02 and 61,871.16

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Solution

The fourth proportional to 104,303.16, 143,911.02 and 61,871.16 is: 85,365.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,303.16 : 143,911.02 = 61,871.16 : x
  2. Step 2: Convert to fraction form
    104,303.16/143,911.02 = 61,871.16/x
  3. Step 3: Cross multiply
    104,303.16x = 143,911.02 × 61,871.16
  4. Step 4: Simplify right side
    104,303.16x = 8,903,941,744.18
  5. Step 5: Solve for x
    x = 8,903,941,744.18/104,303.16
  6. Step 6: Final answer
    x = 85,365.98

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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.