Home / 136,566.40-188,462.56-76,140.80

Finding the Fourth Proportional to 136,566.40, 188,462.56 and 76,140.80

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Solution

The fourth proportional to 136,566.40, 188,462.56 and 76,140.80 is: 105,074.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,566.40 : 188,462.56 = 76,140.80 : x
  2. Step 2: Convert to fraction form
    136,566.40/188,462.56 = 76,140.80/x
  3. Step 3: Cross multiply
    136,566.40x = 188,462.56 × 76,140.80
  4. Step 4: Simplify right side
    136,566.40x = 14,349,690,088.45
  5. Step 5: Solve for x
    x = 14,349,690,088.45/136,566.40
  6. Step 6: Final answer
    x = 105,074.82

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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.