Home / 157,740.72-217,683.32-86,122.16

Finding the Fourth Proportional to 157,740.72, 217,683.32 and 86,122.16

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Solution

The fourth proportional to 157,740.72, 217,683.32 and 86,122.16 is: 118,849.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,740.72 : 217,683.32 = 86,122.16 : x
  2. Step 2: Convert to fraction form
    157,740.72/217,683.32 = 86,122.16/x
  3. Step 3: Cross multiply
    157,740.72x = 217,683.32 × 86,122.16
  4. Step 4: Simplify right side
    157,740.72x = 18,747,357,714.37
  5. Step 5: Solve for x
    x = 18,747,357,714.37/157,740.72
  6. Step 6: Final answer
    x = 118,849.20

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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.