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Finding the Fourth Proportional to 131,254.49, 181,034.49 and 98,990.45

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Solution

The fourth proportional to 131,254.49, 181,034.49 and 98,990.45 is: 136,533.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,254.49 : 181,034.49 = 98,990.45 : x
  2. Step 2: Convert to fraction form
    131,254.49/181,034.49 = 98,990.45/x
  3. Step 3: Cross multiply
    131,254.49x = 181,034.49 × 98,990.45
  4. Step 4: Simplify right side
    131,254.49x = 17,920,685,630.62
  5. Step 5: Solve for x
    x = 17,920,685,630.62/131,254.49
  6. Step 6: Final answer
    x = 136,533.89

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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.