Home / 131,603.13-181,601.19-77,878.67

Finding the Fourth Proportional to 131,603.13, 181,601.19 and 77,878.67

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Solution

The fourth proportional to 131,603.13, 181,601.19 and 77,878.67 is: 107,465.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,603.13 : 181,601.19 = 77,878.67 : x
  2. Step 2: Convert to fraction form
    131,603.13/181,601.19 = 77,878.67/x
  3. Step 3: Cross multiply
    131,603.13x = 181,601.19 × 77,878.67
  4. Step 4: Simplify right side
    131,603.13x = 14,142,858,239.61
  5. Step 5: Solve for x
    x = 14,142,858,239.61/131,603.13
  6. Step 6: Final answer
    x = 107,465.97

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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.