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Finding the Fourth Proportional to 157,501.61, 217,356.71 and 85,885.56

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Solution

The fourth proportional to 157,501.61, 217,356.71 and 85,885.56 is: 118,524.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,501.61 : 217,356.71 = 85,885.56 : x
  2. Step 2: Convert to fraction form
    157,501.61/217,356.71 = 85,885.56/x
  3. Step 3: Cross multiply
    157,501.61x = 217,356.71 × 85,885.56
  4. Step 4: Simplify right side
    157,501.61x = 18,667,803,086.79
  5. Step 5: Solve for x
    x = 18,667,803,086.79/157,501.61
  6. Step 6: Final answer
    x = 118,524.52

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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.