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Finding the Fourth Proportional to 103,699.34, 143,119 and 58,386.32

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Solution

The fourth proportional to 103,699.34, 143,119 and 58,386.32 is: 80,580.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,699.34 : 143,119 = 58,386.32 : x
  2. Step 2: Convert to fraction form
    103,699.34/143,119 = 58,386.32/x
  3. Step 3: Cross multiply
    103,699.34x = 143,119 × 58,386.32
  4. Step 4: Simplify right side
    103,699.34x = 8,356,191,732.08
  5. Step 5: Solve for x
    x = 8,356,191,732.08/103,699.34
  6. Step 6: Final answer
    x = 80,580.95

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1.5x scale

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.