Home / 156,769,976.63-216,343,408.95-86,210,136.80

Finding the Fourth Proportional to 156,769,976.63, 216,343,408.95 and 86,210,136.80

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Solution

The fourth proportional to 156,769,976.63, 216,343,408.95 and 86,210,136.80 is: 118,970,451.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,769,976.63 : 216,343,408.95 = 86,210,136.80 : x
  2. Step 2: Convert to fraction form
    156,769,976.63/216,343,408.95 = 86,210,136.80/x
  3. Step 3: Cross multiply
    156,769,976.63x = 216,343,408.95 × 86,210,136.80
  4. Step 4: Simplify right side
    156,769,976.63x = 18,650,994,880,681,772
  5. Step 5: Solve for x
    x = 18,650,994,880,681,772/156,769,976.63
  6. Step 6: Final answer
    x = 118,970,451.37

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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.