Home / 156,986.60-235,479.90-139,783.40

Finding the Fourth Proportional to 156,986.60, 235,479.90 and 139,783.40

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Solution

The fourth proportional to 156,986.60, 235,479.90 and 139,783.40 is: 209,675.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,986.60 : 235,479.90 = 139,783.40 : x
  2. Step 2: Convert to fraction form
    156,986.60/235,479.90 = 139,783.40/x
  3. Step 3: Cross multiply
    156,986.60x = 235,479.90 × 139,783.40
  4. Step 4: Simplify right side
    156,986.60x = 32,916,181,053.66
  5. Step 5: Solve for x
    x = 32,916,181,053.66/156,986.60
  6. Step 6: Final answer
    x = 209,675.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.