Home / 157,640.75-217,549.02-89,667.50

Finding the Fourth Proportional to 157,640.75, 217,549.02 and 89,667.50

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Solution

The fourth proportional to 157,640.75, 217,549.02 and 89,667.50 is: 123,743.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,640.75 : 217,549.02 = 89,667.50 : x
  2. Step 2: Convert to fraction form
    157,640.75/217,549.02 = 89,667.50/x
  3. Step 3: Cross multiply
    157,640.75x = 217,549.02 × 89,667.50
  4. Step 4: Simplify right side
    157,640.75x = 19,507,076,750.85
  5. Step 5: Solve for x
    x = 19,507,076,750.85/157,640.75
  6. Step 6: Final answer
    x = 123,743.87

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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.