Home / 131,528.88-181,468.08-77,832.36

Finding the Fourth Proportional to 131,528.88, 181,468.08 and 77,832.36

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Solution

The fourth proportional to 131,528.88, 181,468.08 and 77,832.36 is: 107,383.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,528.88 : 181,468.08 = 77,832.36 : x
  2. Step 2: Convert to fraction form
    131,528.88/181,468.08 = 77,832.36/x
  3. Step 3: Cross multiply
    131,528.88x = 181,468.08 × 77,832.36
  4. Step 4: Simplify right side
    131,528.88x = 14,124,088,931.07
  5. Step 5: Solve for x
    x = 14,124,088,931.07/131,528.88
  6. Step 6: Final answer
    x = 107,383.94

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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.