Home / 156,965.40-235,448.10-139,339.80

Finding the Fourth Proportional to 156,965.40, 235,448.10 and 139,339.80

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Solution

The fourth proportional to 156,965.40, 235,448.10 and 139,339.80 is: 209,009.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,965.40 : 235,448.10 = 139,339.80 : x
  2. Step 2: Convert to fraction form
    156,965.40/235,448.10 = 139,339.80/x
  3. Step 3: Cross multiply
    156,965.40x = 235,448.10 × 139,339.80
  4. Step 4: Simplify right side
    156,965.40x = 32,807,291,164.38
  5. Step 5: Solve for x
    x = 32,807,291,164.38/156,965.40
  6. Step 6: Final answer
    x = 209,009.70

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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.