Home / 156,256.21-215,618.16-87,332.95

Finding the Fourth Proportional to 156,256.21, 215,618.16 and 87,332.95

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Solution

The fourth proportional to 156,256.21, 215,618.16 and 87,332.95 is: 120,510.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,256.21 : 215,618.16 = 87,332.95 : x
  2. Step 2: Convert to fraction form
    156,256.21/215,618.16 = 87,332.95/x
  3. Step 3: Cross multiply
    156,256.21x = 215,618.16 × 87,332.95
  4. Step 4: Simplify right side
    156,256.21x = 18,830,569,986.37
  5. Step 5: Solve for x
    x = 18,830,569,986.37/156,256.21
  6. Step 6: Final answer
    x = 120,510.86

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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.