Home / 103,136,809.14-142,331,488.74-56,728,280.88

Finding the Fourth Proportional to 103,136,809.14, 142,331,488.74 and 56,728,280.88

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Solution

The fourth proportional to 103,136,809.14, 142,331,488.74 and 56,728,280.88 is: 78,286,508.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,136,809.14 : 142,331,488.74 = 56,728,280.88 : x
  2. Step 2: Convert to fraction form
    103,136,809.14/142,331,488.74 = 56,728,280.88/x
  3. Step 3: Cross multiply
    103,136,809.14x = 142,331,488.74 × 56,728,280.88
  4. Step 4: Simplify right side
    103,136,809.14x = 8,074,220,671,311,278
  5. Step 5: Solve for x
    x = 8,074,220,671,311,278/103,136,809.14
  6. Step 6: Final answer
    x = 78,286,508.36

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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.