Home / 157,089.23-216,784.08-85,469.78

Finding the Fourth Proportional to 157,089.23, 216,784.08 and 85,469.78

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Solution

The fourth proportional to 157,089.23, 216,784.08 and 85,469.78 is: 117,948.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,089.23 : 216,784.08 = 85,469.78 : x
  2. Step 2: Convert to fraction form
    157,089.23/216,784.08 = 85,469.78/x
  3. Step 3: Cross multiply
    157,089.23x = 216,784.08 × 85,469.78
  4. Step 4: Simplify right side
    157,089.23x = 18,528,486,541.18
  5. Step 5: Solve for x
    x = 18,528,486,541.18/157,089.23
  6. Step 6: Final answer
    x = 117,948.81

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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.