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Finding the Fourth Proportional to 157,598.92, 217,482.21 and 85,978.93

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Solution

The fourth proportional to 157,598.92, 217,482.21 and 85,978.93 is: 118,648.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,598.92 : 217,482.21 = 85,978.93 : x
  2. Step 2: Convert to fraction form
    157,598.92/217,482.21 = 85,978.93/x
  3. Step 3: Cross multiply
    157,598.92x = 217,482.21 × 85,978.93
  4. Step 4: Simplify right side
    157,598.92x = 18,698,887,709.84
  5. Step 5: Solve for x
    x = 18,698,887,709.84/157,598.92
  6. Step 6: Final answer
    x = 118,648.58

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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.