Home / 102,681.13-142,424.89-99,950.08

Finding the Fourth Proportional to 102,681.13, 142,424.89 and 99,950.08

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Solution

The fourth proportional to 102,681.13, 142,424.89 and 99,950.08 is: 138,636.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,681.13 : 142,424.89 = 99,950.08 : x
  2. Step 2: Convert to fraction form
    102,681.13/142,424.89 = 99,950.08/x
  3. Step 3: Cross multiply
    102,681.13x = 142,424.89 × 99,950.08
  4. Step 4: Simplify right side
    102,681.13x = 14,235,379,149.49
  5. Step 5: Solve for x
    x = 14,235,379,149.49/102,681.13
  6. Step 6: Final answer
    x = 138,636.76

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.