Home / 136,220.04-187,980.72-78,861.80

Finding the Fourth Proportional to 136,220.04, 187,980.72 and 78,861.80

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Solution

The fourth proportional to 136,220.04, 187,980.72 and 78,861.80 is: 108,827.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,220.04 : 187,980.72 = 78,861.80 : x
  2. Step 2: Convert to fraction form
    136,220.04/187,980.72 = 78,861.80/x
  3. Step 3: Cross multiply
    136,220.04x = 187,980.72 × 78,861.80
  4. Step 4: Simplify right side
    136,220.04x = 14,824,496,610.28
  5. Step 5: Solve for x
    x = 14,824,496,610.28/136,220.04
  6. Step 6: Final answer
    x = 108,827.57

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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.