Home / 121,029,721.02-166,998,172.23-72,141,697.98

Finding the Fourth Proportional to 121,029,721.02, 166,998,172.23 and 72,141,697.98

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Solution

The fourth proportional to 121,029,721.02, 166,998,172.23 and 72,141,697.98 is: 99,541,927.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,029,721.02 : 166,998,172.23 = 72,141,697.98 : x
  2. Step 2: Convert to fraction form
    121,029,721.02/166,998,172.23 = 72,141,697.98/x
  3. Step 3: Cross multiply
    121,029,721.02x = 166,998,172.23 × 72,141,697.98
  4. Step 4: Simplify right side
    121,029,721.02x = 12,047,531,704,228,684
  5. Step 5: Solve for x
    x = 12,047,531,704,228,684/121,029,721.02
  6. Step 6: Final answer
    x = 99,541,927.41

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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.