Home / 131,528.64-181,478.16-77,809.44

Finding the Fourth Proportional to 131,528.64, 181,478.16 and 77,809.44

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Solution

The fourth proportional to 131,528.64, 181,478.16 and 77,809.44 is: 107,358.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,528.64 : 181,478.16 = 77,809.44 : x
  2. Step 2: Convert to fraction form
    131,528.64/181,478.16 = 77,809.44/x
  3. Step 3: Cross multiply
    131,528.64x = 181,478.16 × 77,809.44
  4. Step 4: Simplify right side
    131,528.64x = 14,120,714,001.83
  5. Step 5: Solve for x
    x = 14,120,714,001.83/131,528.64
  6. Step 6: Final answer
    x = 107,358.47

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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.