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Finding the Fourth Proportional to 157,141.45, 216,851.02 and 85,519.93

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Solution

The fourth proportional to 157,141.45, 216,851.02 and 85,519.93 is: 118,015.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,141.45 : 216,851.02 = 85,519.93 : x
  2. Step 2: Convert to fraction form
    157,141.45/216,851.02 = 85,519.93/x
  3. Step 3: Cross multiply
    157,141.45x = 216,851.02 × 85,519.93
  4. Step 4: Simplify right side
    157,141.45x = 18,545,084,050.83
  5. Step 5: Solve for x
    x = 18,545,084,050.83/157,141.45
  6. Step 6: Final answer
    x = 118,015.23

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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.