Home / 131,768.96-181,839.36-72,152.96

Finding the Fourth Proportional to 131,768.96, 181,839.36 and 72,152.96

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Solution

The fourth proportional to 131,768.96, 181,839.36 and 72,152.96 is: 99,570.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,768.96 : 181,839.36 = 72,152.96 : x
  2. Step 2: Convert to fraction form
    131,768.96/181,839.36 = 72,152.96/x
  3. Step 3: Cross multiply
    131,768.96x = 181,839.36 × 72,152.96
  4. Step 4: Simplify right side
    131,768.96x = 13,120,248,068.51
  5. Step 5: Solve for x
    x = 13,120,248,068.51/131,768.96
  6. Step 6: Final answer
    x = 99,570.10

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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.