Home / 131,416.40-181,354.70-70,987.04

Finding the Fourth Proportional to 131,416.40, 181,354.70 and 70,987.04

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Solution

The fourth proportional to 131,416.40, 181,354.70 and 70,987.04 is: 97,962.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,416.40 : 181,354.70 = 70,987.04 : x
  2. Step 2: Convert to fraction form
    131,416.40/181,354.70 = 70,987.04/x
  3. Step 3: Cross multiply
    131,416.40x = 181,354.70 × 70,987.04
  4. Step 4: Simplify right side
    131,416.40x = 12,873,833,343.09
  5. Step 5: Solve for x
    x = 12,873,833,343.09/131,416.40
  6. Step 6: Final answer
    x = 97,962.15

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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.