Home / 116,381.45-160,667.77-78,341.00

Finding the Fourth Proportional to 116,381.45, 160,667.77 and 78,341.00

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Solution

The fourth proportional to 116,381.45, 160,667.77 and 78,341.00 is: 108,151.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,381.45 : 160,667.77 = 78,341.00 : x
  2. Step 2: Convert to fraction form
    116,381.45/160,667.77 = 78,341.00/x
  3. Step 3: Cross multiply
    116,381.45x = 160,667.77 × 78,341.00
  4. Step 4: Simplify right side
    116,381.45x = 12,586,872,770.38
  5. Step 5: Solve for x
    x = 12,586,872,770.38/116,381.45
  6. Step 6: Final answer
    x = 108,151.89

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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.