Home / 156,695.80-235,043.70-139,637.20

Finding the Fourth Proportional to 156,695.80, 235,043.70 and 139,637.20

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Solution

The fourth proportional to 156,695.80, 235,043.70 and 139,637.20 is: 209,455.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,695.80 : 235,043.70 = 139,637.20 : x
  2. Step 2: Convert to fraction form
    156,695.80/235,043.70 = 139,637.20/x
  3. Step 3: Cross multiply
    156,695.80x = 235,043.70 × 139,637.20
  4. Step 4: Simplify right side
    156,695.80x = 32,820,844,145.64
  5. Step 5: Solve for x
    x = 32,820,844,145.64/156,695.80
  6. Step 6: Final answer
    x = 209,455.80

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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.