Home / 140,371,788.80-210,557,683.20-72,347,340.80

Finding the Fourth Proportional to 140,371,788.80, 210,557,683.20 and 72,347,340.80

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Solution

The fourth proportional to 140,371,788.80, 210,557,683.20 and 72,347,340.80 is: 108,521,011.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,371,788.80 : 210,557,683.20 = 72,347,340.80 : x
  2. Step 2: Convert to fraction form
    140,371,788.80/210,557,683.20 = 72,347,340.80/x
  3. Step 3: Cross multiply
    140,371,788.80x = 210,557,683.20 × 72,347,340.80
  4. Step 4: Simplify right side
    140,371,788.80x = 15,233,288,464,528,834
  5. Step 5: Solve for x
    x = 15,233,288,464,528,834/140,371,788.80
  6. Step 6: Final answer
    x = 108,521,011.20

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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.