Home / 156,985.24-216,639.06-85,365.40

Finding the Fourth Proportional to 156,985.24, 216,639.06 and 85,365.40

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Solution

The fourth proportional to 156,985.24, 216,639.06 and 85,365.40 is: 117,803.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,985.24 : 216,639.06 = 85,365.40 : x
  2. Step 2: Convert to fraction form
    156,985.24/216,639.06 = 85,365.40/x
  3. Step 3: Cross multiply
    156,985.24x = 216,639.06 × 85,365.40
  4. Step 4: Simplify right side
    156,985.24x = 18,493,480,012.52
  5. Step 5: Solve for x
    x = 18,493,480,012.52/156,985.24
  6. Step 6: Final answer
    x = 117,803.94

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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.