Home / 139,881.38-193,036.32-76,219.16

Finding the Fourth Proportional to 139,881.38, 193,036.32 and 76,219.16

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Solution

The fourth proportional to 139,881.38, 193,036.32 and 76,219.16 is: 105,182.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,881.38 : 193,036.32 = 76,219.16 : x
  2. Step 2: Convert to fraction form
    139,881.38/193,036.32 = 76,219.16/x
  3. Step 3: Cross multiply
    139,881.38x = 193,036.32 × 76,219.16
  4. Step 4: Simplify right side
    139,881.38x = 14,713,065,194.71
  5. Step 5: Solve for x
    x = 14,713,065,194.71/139,881.38
  6. Step 6: Final answer
    x = 105,182.45

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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.