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Finding the Fourth Proportional to 152,925.76, 211,037.55 and 85,857.76

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Solution

The fourth proportional to 152,925.76, 211,037.55 and 85,857.76 is: 118,483.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,925.76 : 211,037.55 = 85,857.76 : x
  2. Step 2: Convert to fraction form
    152,925.76/211,037.55 = 85,857.76/x
  3. Step 3: Cross multiply
    152,925.76x = 211,037.55 × 85,857.76
  4. Step 4: Simplify right side
    152,925.76x = 18,119,211,318.89
  5. Step 5: Solve for x
    x = 18,119,211,318.89/152,925.76
  6. Step 6: Final answer
    x = 118,483.71

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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.