Home / 135,521.39-187,006.23-78,165.95

Finding the Fourth Proportional to 135,521.39, 187,006.23 and 78,165.95

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Solution

The fourth proportional to 135,521.39, 187,006.23 and 78,165.95 is: 107,861.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,521.39 : 187,006.23 = 78,165.95 : x
  2. Step 2: Convert to fraction form
    135,521.39/187,006.23 = 78,165.95/x
  3. Step 3: Cross multiply
    135,521.39x = 187,006.23 × 78,165.95
  4. Step 4: Simplify right side
    135,521.39x = 14,617,518,688.84
  5. Step 5: Solve for x
    x = 14,617,518,688.84/135,521.39
  6. Step 6: Final answer
    x = 107,861.34

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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.