Home / 135,390.84-186,841.34-77,998.50

Finding the Fourth Proportional to 135,390.84, 186,841.34 and 77,998.50

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Solution

The fourth proportional to 135,390.84, 186,841.34 and 77,998.50 is: 107,639.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,390.84 : 186,841.34 = 77,998.50 : x
  2. Step 2: Convert to fraction form
    135,390.84/186,841.34 = 77,998.50/x
  3. Step 3: Cross multiply
    135,390.84x = 186,841.34 × 77,998.50
  4. Step 4: Simplify right side
    135,390.84x = 14,573,343,868.00
  5. Step 5: Solve for x
    x = 14,573,343,868.00/135,390.84
  6. Step 6: Final answer
    x = 107,639.07

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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.