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Finding the Fourth Proportional to 157,426.02, 217,246.56 and 85,806.06

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Solution

The fourth proportional to 157,426.02, 217,246.56 and 85,806.06 is: 118,411.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,426.02 : 217,246.56 = 85,806.06 : x
  2. Step 2: Convert to fraction form
    157,426.02/217,246.56 = 85,806.06/x
  3. Step 3: Cross multiply
    157,426.02x = 217,246.56 × 85,806.06
  4. Step 4: Simplify right side
    157,426.02x = 18,641,071,362.15
  5. Step 5: Solve for x
    x = 18,641,071,362.15/157,426.02
  6. Step 6: Final answer
    x = 118,411.63

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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.