Home / 135,050.94-186,332.40-77,687.28

Finding the Fourth Proportional to 135,050.94, 186,332.40 and 77,687.28

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Solution

The fourth proportional to 135,050.94, 186,332.40 and 77,687.28 is: 107,186.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,050.94 : 186,332.40 = 77,687.28 : x
  2. Step 2: Convert to fraction form
    135,050.94/186,332.40 = 77,687.28/x
  3. Step 3: Cross multiply
    135,050.94x = 186,332.40 × 77,687.28
  4. Step 4: Simplify right side
    135,050.94x = 14,475,657,331.87
  5. Step 5: Solve for x
    x = 14,475,657,331.87/135,050.94
  6. Step 6: Final answer
    x = 107,186.65

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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.