Home / 156,971.53-216,617.65-85,350.93

Finding the Fourth Proportional to 156,971.53, 216,617.65 and 85,350.93

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Solution

The fourth proportional to 156,971.53, 216,617.65 and 85,350.93 is: 117,782.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,971.53 : 216,617.65 = 85,350.93 : x
  2. Step 2: Convert to fraction form
    156,971.53/216,617.65 = 85,350.93/x
  3. Step 3: Cross multiply
    156,971.53x = 216,617.65 × 85,350.93
  4. Step 4: Simplify right side
    156,971.53x = 18,488,517,881.91
  5. Step 5: Solve for x
    x = 18,488,517,881.91/156,971.53
  6. Step 6: Final answer
    x = 117,782.62

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1.5x scale

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.