Home / 152,815.64-210,880.12-84,835.60

Finding the Fourth Proportional to 152,815.64, 210,880.12 and 84,835.60

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Solution

The fourth proportional to 152,815.64, 210,880.12 and 84,835.60 is: 117,070.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,815.64 : 210,880.12 = 84,835.60 : x
  2. Step 2: Convert to fraction form
    152,815.64/210,880.12 = 84,835.60/x
  3. Step 3: Cross multiply
    152,815.64x = 210,880.12 × 84,835.60
  4. Step 4: Simplify right side
    152,815.64x = 17,890,141,508.27
  5. Step 5: Solve for x
    x = 17,890,141,508.27/152,815.64
  6. Step 6: Final answer
    x = 117,070.10

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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.