Home / 139,985.60-193,124.98-86,177.12

Finding the Fourth Proportional to 139,985.60, 193,124.98 and 86,177.12

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Solution

The fourth proportional to 139,985.60, 193,124.98 and 86,177.12 is: 118,890.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,985.60 : 193,124.98 = 86,177.12 : x
  2. Step 2: Convert to fraction form
    139,985.60/193,124.98 = 86,177.12/x
  3. Step 3: Cross multiply
    139,985.60x = 193,124.98 × 86,177.12
  4. Step 4: Simplify right side
    139,985.60x = 16,642,954,576.46
  5. Step 5: Solve for x
    x = 16,642,954,576.46/139,985.60
  6. Step 6: Final answer
    x = 118,890.48

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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.