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Finding the Fourth Proportional to 157,409.54, 217,218.83 and 85,788.02

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Solution

The fourth proportional to 157,409.54, 217,218.83 and 85,788.02 is: 118,384.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,409.54 : 217,218.83 = 85,788.02 : x
  2. Step 2: Convert to fraction form
    157,409.54/217,218.83 = 85,788.02/x
  3. Step 3: Cross multiply
    157,409.54x = 217,218.83 × 85,788.02
  4. Step 4: Simplify right side
    157,409.54x = 18,634,773,332.42
  5. Step 5: Solve for x
    x = 18,634,773,332.42/157,409.54
  6. Step 6: Final answer
    x = 118,384.01

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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.