Home / 102,988.75-142,126.64-58,276.75

Finding the Fourth Proportional to 102,988.75, 142,126.64 and 58,276.75

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Solution

The fourth proportional to 102,988.75, 142,126.64 and 58,276.75 is: 80,423.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,988.75 : 142,126.64 = 58,276.75 : x
  2. Step 2: Convert to fraction form
    102,988.75/142,126.64 = 58,276.75/x
  3. Step 3: Cross multiply
    102,988.75x = 142,126.64 × 58,276.75
  4. Step 4: Simplify right side
    102,988.75x = 8,282,678,667.62
  5. Step 5: Solve for x
    x = 8,282,678,667.62/102,988.75
  6. Step 6: Final answer
    x = 80,423.14

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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.