Home / 137,107,069.60-189,207,735.51-78,370,995.88

Finding the Fourth Proportional to 137,107,069.60, 189,207,735.51 and 78,370,995.88

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Solution

The fourth proportional to 137,107,069.60, 189,207,735.51 and 78,370,995.88 is: 108,151,962.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,107,069.60 : 189,207,735.51 = 78,370,995.88 : x
  2. Step 2: Convert to fraction form
    137,107,069.60/189,207,735.51 = 78,370,995.88/x
  3. Step 3: Cross multiply
    137,107,069.60x = 189,207,735.51 × 78,370,995.88
  4. Step 4: Simplify right side
    137,107,069.60x = 14,828,398,660,118,338
  5. Step 5: Solve for x
    x = 14,828,398,660,118,338/137,107,069.60
  6. Step 6: Final answer
    x = 108,151,962.57

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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.