Home / 156,716.66-216,263.40-85,095.20

Finding the Fourth Proportional to 156,716.66, 216,263.40 and 85,095.20

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Solution

The fourth proportional to 156,716.66, 216,263.40 and 85,095.20 is: 117,428.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,716.66 : 216,263.40 = 85,095.20 : x
  2. Step 2: Convert to fraction form
    156,716.66/216,263.40 = 85,095.20/x
  3. Step 3: Cross multiply
    156,716.66x = 216,263.40 × 85,095.20
  4. Step 4: Simplify right side
    156,716.66x = 18,402,977,275.68
  5. Step 5: Solve for x
    x = 18,402,977,275.68/156,716.66
  6. Step 6: Final answer
    x = 117,428.34

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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.