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Finding the Fourth Proportional to 157,291.68, 217,055.04 and 85,671.36

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Solution

The fourth proportional to 157,291.68, 217,055.04 and 85,671.36 is: 118,222.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,291.68 : 217,055.04 = 85,671.36 : x
  2. Step 2: Convert to fraction form
    157,291.68/217,055.04 = 85,671.36/x
  3. Step 3: Cross multiply
    157,291.68x = 217,055.04 × 85,671.36
  4. Step 4: Simplify right side
    157,291.68x = 18,595,400,471.65
  5. Step 5: Solve for x
    x = 18,595,400,471.65/157,291.68
  6. Step 6: Final answer
    x = 118,222.40

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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.