Home / 157,308.48-217,084.59-85,688.28

Finding the Fourth Proportional to 157,308.48, 217,084.59 and 85,688.28

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Solution

The fourth proportional to 157,308.48, 217,084.59 and 85,688.28 is: 118,249.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,308.48 : 217,084.59 = 85,688.28 : x
  2. Step 2: Convert to fraction form
    157,308.48/217,084.59 = 85,688.28/x
  3. Step 3: Cross multiply
    157,308.48x = 217,084.59 × 85,688.28
  4. Step 4: Simplify right side
    157,308.48x = 18,601,605,131.61
  5. Step 5: Solve for x
    x = 18,601,605,131.61/157,308.48
  6. Step 6: Final answer
    x = 118,249.22

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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.