Home / 156,985.18-216,621.21-89,009.98

Finding the Fourth Proportional to 156,985.18, 216,621.21 and 89,009.98

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Solution

The fourth proportional to 156,985.18, 216,621.21 and 89,009.98 is: 122,823.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,985.18 : 216,621.21 = 89,009.98 : x
  2. Step 2: Convert to fraction form
    156,985.18/216,621.21 = 89,009.98/x
  3. Step 3: Cross multiply
    156,985.18x = 216,621.21 × 89,009.98
  4. Step 4: Simplify right side
    156,985.18x = 19,281,449,569.68
  5. Step 5: Solve for x
    x = 19,281,449,569.68/156,985.18
  6. Step 6: Final answer
    x = 122,823.37

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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.