Home / 156,782.64-216,364.06-85,166.76

Finding the Fourth Proportional to 156,782.64, 216,364.06 and 85,166.76

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Solution

The fourth proportional to 156,782.64, 216,364.06 and 85,166.76 is: 117,532.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,782.64 : 216,364.06 = 85,166.76 : x
  2. Step 2: Convert to fraction form
    156,782.64/216,364.06 = 85,166.76/x
  3. Step 3: Cross multiply
    156,782.64x = 216,364.06 × 85,166.76
  4. Step 4: Simplify right side
    156,782.64x = 18,427,024,888.83
  5. Step 5: Solve for x
    x = 18,427,024,888.83/156,782.64
  6. Step 6: Final answer
    x = 117,532.31

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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.