Home / 138,200.94-190,726.98-77,777.40

Finding the Fourth Proportional to 138,200.94, 190,726.98 and 77,777.40

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Solution

The fourth proportional to 138,200.94, 190,726.98 and 77,777.40 is: 107,338.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,200.94 : 190,726.98 = 77,777.40 : x
  2. Step 2: Convert to fraction form
    138,200.94/190,726.98 = 77,777.40/x
  3. Step 3: Cross multiply
    138,200.94x = 190,726.98 × 77,777.40
  4. Step 4: Simplify right side
    138,200.94x = 14,834,248,614.25
  5. Step 5: Solve for x
    x = 14,834,248,614.25/138,200.94
  6. Step 6: Final answer
    x = 107,338.26

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1.5x scale

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.