Home / 131,521.77-181,456.50-74,153.91

Finding the Fourth Proportional to 131,521.77, 181,456.50 and 74,153.91

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Solution

The fourth proportional to 131,521.77, 181,456.50 and 74,153.91 is: 102,307.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,521.77 : 181,456.50 = 74,153.91 : x
  2. Step 2: Convert to fraction form
    131,521.77/181,456.50 = 74,153.91/x
  3. Step 3: Cross multiply
    131,521.77x = 181,456.50 × 74,153.91
  4. Step 4: Simplify right side
    131,521.77x = 13,455,708,969.92
  5. Step 5: Solve for x
    x = 13,455,708,969.92/131,521.77
  6. Step 6: Final answer
    x = 102,307.85

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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.