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Finding the Fourth Proportional to 157,227.76, 216,975.80 and 90,146.80

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Solution

The fourth proportional to 157,227.76, 216,975.80 and 90,146.80 is: 124,403.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,227.76 : 216,975.80 = 90,146.80 : x
  2. Step 2: Convert to fraction form
    157,227.76/216,975.80 = 90,146.80/x
  3. Step 3: Cross multiply
    157,227.76x = 216,975.80 × 90,146.80
  4. Step 4: Simplify right side
    157,227.76x = 19,559,674,047.44
  5. Step 5: Solve for x
    x = 19,559,674,047.44/157,227.76
  6. Step 6: Final answer
    x = 124,403.44

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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.