Home / 134,829.47-186,076.02-78,237.20

Finding the Fourth Proportional to 134,829.47, 186,076.02 and 78,237.20

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Solution

The fourth proportional to 134,829.47, 186,076.02 and 78,237.20 is: 107,973.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,829.47 : 186,076.02 = 78,237.20 : x
  2. Step 2: Convert to fraction form
    134,829.47/186,076.02 = 78,237.20/x
  3. Step 3: Cross multiply
    134,829.47x = 186,076.02 × 78,237.20
  4. Step 4: Simplify right side
    134,829.47x = 14,558,065,861.56
  5. Step 5: Solve for x
    x = 14,558,065,861.56/134,829.47
  6. Step 6: Final answer
    x = 107,973.92

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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.