Home / 156,938.12-216,572.05-85,319.93

Finding the Fourth Proportional to 156,938.12, 216,572.05 and 85,319.93

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Solution

The fourth proportional to 156,938.12, 216,572.05 and 85,319.93 is: 117,740.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,938.12 : 216,572.05 = 85,319.93 : x
  2. Step 2: Convert to fraction form
    156,938.12/216,572.05 = 85,319.93/x
  3. Step 3: Cross multiply
    156,938.12x = 216,572.05 × 85,319.93
  4. Step 4: Simplify right side
    156,938.12x = 18,477,912,145.96
  5. Step 5: Solve for x
    x = 18,477,912,145.96/156,938.12
  6. Step 6: Final answer
    x = 117,740.11

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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.