Home / 131,420.86-181,360.64-70,991.49

Finding the Fourth Proportional to 131,420.86, 181,360.64 and 70,991.49

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Solution

The fourth proportional to 131,420.86, 181,360.64 and 70,991.49 is: 97,968.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,420.86 : 181,360.64 = 70,991.49 : x
  2. Step 2: Convert to fraction form
    131,420.86/181,360.64 = 70,991.49/x
  3. Step 3: Cross multiply
    131,420.86x = 181,360.64 × 70,991.49
  4. Step 4: Simplify right side
    131,420.86x = 12,875,060,799.19
  5. Step 5: Solve for x
    x = 12,875,060,799.19/131,420.86
  6. Step 6: Final answer
    x = 97,968.17

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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.