Home / 154,893.32-213,761.40-86,931.80

Finding the Fourth Proportional to 154,893.32, 213,761.40 and 86,931.80

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Solution

The fourth proportional to 154,893.32, 213,761.40 and 86,931.80 is: 119,970.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,893.32 : 213,761.40 = 86,931.80 : x
  2. Step 2: Convert to fraction form
    154,893.32/213,761.40 = 86,931.80/x
  3. Step 3: Cross multiply
    154,893.32x = 213,761.40 × 86,931.80
  4. Step 4: Simplify right side
    154,893.32x = 18,582,663,272.52
  5. Step 5: Solve for x
    x = 18,582,663,272.52/154,893.32
  6. Step 6: Final answer
    x = 119,970.72

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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.