Home / 153,500.16-211,849.60-86,432

Finding the Fourth Proportional to 153,500.16, 211,849.60 and 86,432

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Solution

The fourth proportional to 153,500.16, 211,849.60 and 86,432 is: 119,287.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,500.16 : 211,849.60 = 86,432 : x
  2. Step 2: Convert to fraction form
    153,500.16/211,849.60 = 86,432/x
  3. Step 3: Cross multiply
    153,500.16x = 211,849.60 × 86,432
  4. Step 4: Simplify right side
    153,500.16x = 18,310,584,627.20
  5. Step 5: Solve for x
    x = 18,310,584,627.20/153,500.16
  6. Step 6: Final answer
    x = 119,287.07

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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.