Home / 105,595.49-145,727.03-65,330.19

Finding the Fourth Proportional to 105,595.49, 145,727.03 and 65,330.19

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Solution

The fourth proportional to 105,595.49, 145,727.03 and 65,330.19 is: 90,158.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,595.49 : 145,727.03 = 65,330.19 : x
  2. Step 2: Convert to fraction form
    105,595.49/145,727.03 = 65,330.19/x
  3. Step 3: Cross multiply
    105,595.49x = 145,727.03 × 65,330.19
  4. Step 4: Simplify right side
    105,595.49x = 9,520,374,558.04
  5. Step 5: Solve for x
    x = 9,520,374,558.04/105,595.49
  6. Step 6: Final answer
    x = 90,158.91

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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.