Home / 131,529.29-181,521.53-80,541.77

Finding the Fourth Proportional to 131,529.29, 181,521.53 and 80,541.77

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Solution

The fourth proportional to 131,529.29, 181,521.53 and 80,541.77 is: 111,154.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,529.29 : 181,521.53 = 80,541.77 : x
  2. Step 2: Convert to fraction form
    131,529.29/181,521.53 = 80,541.77/x
  3. Step 3: Cross multiply
    131,529.29x = 181,521.53 × 80,541.77
  4. Step 4: Simplify right side
    131,529.29x = 14,620,065,319.31
  5. Step 5: Solve for x
    x = 14,620,065,319.31/131,529.29
  6. Step 6: Final answer
    x = 111,154.45

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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.