Home / 156,985.12-235,485.83-51,812.29

Finding the Fourth Proportional to 156,985.12, 235,485.83 and 51,812.29

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Solution

The fourth proportional to 156,985.12, 235,485.83 and 51,812.29 is: 77,721.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,985.12 : 235,485.83 = 51,812.29 : x
  2. Step 2: Convert to fraction form
    156,985.12/235,485.83 = 51,812.29/x
  3. Step 3: Cross multiply
    156,985.12x = 235,485.83 × 51,812.29
  4. Step 4: Simplify right side
    156,985.12x = 12,201,059,855.79
  5. Step 5: Solve for x
    x = 12,201,059,855.79/156,985.12
  6. Step 6: Final answer
    x = 77,721.12

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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.