Home / 156,650.77-216,178.23-85,030.78

Finding the Fourth Proportional to 156,650.77, 216,178.23 and 85,030.78

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Solution

The fourth proportional to 156,650.77, 216,178.23 and 85,030.78 is: 117,342.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,650.77 : 216,178.23 = 85,030.78 : x
  2. Step 2: Convert to fraction form
    156,650.77/216,178.23 = 85,030.78/x
  3. Step 3: Cross multiply
    156,650.77x = 216,178.23 × 85,030.78
  4. Step 4: Simplify right side
    156,650.77x = 18,381,803,515.92
  5. Step 5: Solve for x
    x = 18,381,803,515.92/156,650.77
  6. Step 6: Final answer
    x = 117,342.57

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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.