Home / 156,784.40-216,279.54-99,322.36

Finding the Fourth Proportional to 156,784.40, 216,279.54 and 99,322.36

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Solution

The fourth proportional to 156,784.40, 216,279.54 and 99,322.36 is: 137,012.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,784.40 : 216,279.54 = 99,322.36 : x
  2. Step 2: Convert to fraction form
    156,784.40/216,279.54 = 99,322.36/x
  3. Step 3: Cross multiply
    156,784.40x = 216,279.54 × 99,322.36
  4. Step 4: Simplify right side
    156,784.40x = 21,481,394,332.51
  5. Step 5: Solve for x
    x = 21,481,394,332.51/156,784.40
  6. Step 6: Final answer
    x = 137,012.32

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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.