Home / 143,085,328.60-214,698,851.70-81,721,607.80

Finding the Fourth Proportional to 143,085,328.60, 214,698,851.70 and 81,721,607.80

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Solution

The fourth proportional to 143,085,328.60, 214,698,851.70 and 81,721,607.80 is: 122,622,881.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,085,328.60 : 214,698,851.70 = 81,721,607.80 : x
  2. Step 2: Convert to fraction form
    143,085,328.60/214,698,851.70 = 81,721,607.80/x
  3. Step 3: Cross multiply
    143,085,328.60x = 214,698,851.70 × 81,721,607.80
  4. Step 4: Simplify right side
    143,085,328.60x = 17,545,535,353,737,762
  5. Step 5: Solve for x
    x = 17,545,535,353,737,762/143,085,328.60
  6. Step 6: Final answer
    x = 122,622,881.92

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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.