Home / 157,729.86-217,666.65-86,109.06

Finding the Fourth Proportional to 157,729.86, 217,666.65 and 86,109.06

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Solution

The fourth proportional to 157,729.86, 217,666.65 and 86,109.06 is: 118,830.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,729.86 : 217,666.65 = 86,109.06 : x
  2. Step 2: Convert to fraction form
    157,729.86/217,666.65 = 86,109.06/x
  3. Step 3: Cross multiply
    157,729.86x = 217,666.65 × 86,109.06
  4. Step 4: Simplify right side
    157,729.86x = 18,743,070,624.85
  5. Step 5: Solve for x
    x = 18,743,070,624.85/157,729.86
  6. Step 6: Final answer
    x = 118,830.20

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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.