Home / 72,673,214.20-109,069,307.70-72,106,343.80

Finding the Fourth Proportional to 72,673,214.20, 109,069,307.70 and 72,106,343.80

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Solution

The fourth proportional to 72,673,214.20, 109,069,307.70 and 72,106,343.80 is: 108,218,538.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,673,214.20 : 109,069,307.70 = 72,106,343.80 : x
  2. Step 2: Convert to fraction form
    72,673,214.20/109,069,307.70 = 72,106,343.80/x
  3. Step 3: Cross multiply
    72,673,214.20x = 109,069,307.70 × 72,106,343.80
  4. Step 4: Simplify right side
    72,673,214.20x = 7,864,588,999,044,187
  5. Step 5: Solve for x
    x = 7,864,588,999,044,187/72,673,214.20
  6. Step 6: Final answer
    x = 108,218,538.09

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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.