Home / 131,312.48-181,203.78-77,602.49

Finding the Fourth Proportional to 131,312.48, 181,203.78 and 77,602.49

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Solution

The fourth proportional to 131,312.48, 181,203.78 and 77,602.49 is: 107,087.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,312.48 : 181,203.78 = 77,602.49 : x
  2. Step 2: Convert to fraction form
    131,312.48/181,203.78 = 77,602.49/x
  3. Step 3: Cross multiply
    131,312.48x = 181,203.78 × 77,602.49
  4. Step 4: Simplify right side
    131,312.48x = 14,061,864,589.92
  5. Step 5: Solve for x
    x = 14,061,864,589.92/131,312.48
  6. Step 6: Final answer
    x = 107,087.04

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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.