Home / 156,976.57-235,465.08-72,690.81

Finding the Fourth Proportional to 156,976.57, 235,465.08 and 72,690.81

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Solution

The fourth proportional to 156,976.57, 235,465.08 and 72,690.81 is: 109,036.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,976.57 : 235,465.08 = 72,690.81 : x
  2. Step 2: Convert to fraction form
    156,976.57/235,465.08 = 72,690.81/x
  3. Step 3: Cross multiply
    156,976.57x = 235,465.08 × 72,690.81
  4. Step 4: Simplify right side
    156,976.57x = 17,116,147,391.91
  5. Step 5: Solve for x
    x = 17,116,147,391.91/156,976.57
  6. Step 6: Final answer
    x = 109,036.32

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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.