Home / 131,643.69-181,641.45-77,901.81

Finding the Fourth Proportional to 131,643.69, 181,641.45 and 77,901.81

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Solution

The fourth proportional to 131,643.69, 181,641.45 and 77,901.81 is: 107,488.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,643.69 : 181,641.45 = 77,901.81 : x
  2. Step 2: Convert to fraction form
    131,643.69/181,641.45 = 77,901.81/x
  3. Step 3: Cross multiply
    131,643.69x = 181,641.45 × 77,901.81
  4. Step 4: Simplify right side
    131,643.69x = 14,150,197,726.02
  5. Step 5: Solve for x
    x = 14,150,197,726.02/131,643.69
  6. Step 6: Final answer
    x = 107,488.61

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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.