Home / 156,970.31-235,518.33-57,137.40

Finding the Fourth Proportional to 156,970.31, 235,518.33 and 57,137.40

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Solution

The fourth proportional to 156,970.31, 235,518.33 and 57,137.40 is: 85,728.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,970.31 : 235,518.33 = 57,137.40 : x
  2. Step 2: Convert to fraction form
    156,970.31/235,518.33 = 57,137.40/x
  3. Step 3: Cross multiply
    156,970.31x = 235,518.33 × 57,137.40
  4. Step 4: Simplify right side
    156,970.31x = 13,456,905,242.81
  5. Step 5: Solve for x
    x = 13,456,905,242.81/156,970.31
  6. Step 6: Final answer
    x = 85,728.99

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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.