Home / 156,938.76-216,574.83-85,319.10

Finding the Fourth Proportional to 156,938.76, 216,574.83 and 85,319.10

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Solution

The fourth proportional to 156,938.76, 216,574.83 and 85,319.10 is: 117,740.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,938.76 : 216,574.83 = 85,319.10 : x
  2. Step 2: Convert to fraction form
    156,938.76/216,574.83 = 85,319.10/x
  3. Step 3: Cross multiply
    156,938.76x = 216,574.83 × 85,319.10
  4. Step 4: Simplify right side
    156,938.76x = 18,477,969,578.25
  5. Step 5: Solve for x
    x = 18,477,969,578.25/156,938.76
  6. Step 6: Final answer
    x = 117,740.00

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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.