Home / 156,784.80-216,362.16-85,164.24

Finding the Fourth Proportional to 156,784.80, 216,362.16 and 85,164.24

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Solution

The fourth proportional to 156,784.80, 216,362.16 and 85,164.24 is: 117,526.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,784.80 : 216,362.16 = 85,164.24 : x
  2. Step 2: Convert to fraction form
    156,784.80/216,362.16 = 85,164.24/x
  3. Step 3: Cross multiply
    156,784.80x = 216,362.16 × 85,164.24
  4. Step 4: Simplify right side
    156,784.80x = 18,426,318,921.16
  5. Step 5: Solve for x
    x = 18,426,318,921.16/156,784.80
  6. Step 6: Final answer
    x = 117,526.18

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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.