Home / 132,670.40-183,079.20-72,239.52

Finding the Fourth Proportional to 132,670.40, 183,079.20 and 72,239.52

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Solution

The fourth proportional to 132,670.40, 183,079.20 and 72,239.52 is: 99,687.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,670.40 : 183,079.20 = 72,239.52 : x
  2. Step 2: Convert to fraction form
    132,670.40/183,079.20 = 72,239.52/x
  3. Step 3: Cross multiply
    132,670.40x = 183,079.20 × 72,239.52
  4. Step 4: Simplify right side
    132,670.40x = 13,225,553,529.98
  5. Step 5: Solve for x
    x = 13,225,553,529.98/132,670.40
  6. Step 6: Final answer
    x = 99,687.30

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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.