Home / 118,871,999.80-178,307,999.70-99,740,123.80

Finding the Fourth Proportional to 118,871,999.80, 178,307,999.70 and 99,740,123.80

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Solution

The fourth proportional to 118,871,999.80, 178,307,999.70 and 99,740,123.80 is: 149,610,185.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,871,999.80 : 178,307,999.70 = 99,740,123.80 : x
  2. Step 2: Convert to fraction form
    118,871,999.80/178,307,999.70 = 99,740,123.80/x
  3. Step 3: Cross multiply
    118,871,999.80x = 178,307,999.70 × 99,740,123.80
  4. Step 4: Simplify right side
    118,871,999.80x = 17,784,461,964,608,362
  5. Step 5: Solve for x
    x = 17,784,461,964,608,362/118,871,999.80
  6. Step 6: Final answer
    x = 149,610,185.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.