Home / 157,298.15-217,074.79-85,678.00

Finding the Fourth Proportional to 157,298.15, 217,074.79 and 85,678.00

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Solution

The fourth proportional to 157,298.15, 217,074.79 and 85,678.00 is: 118,237.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,298.15 : 217,074.79 = 85,678.00 : x
  2. Step 2: Convert to fraction form
    157,298.15/217,074.79 = 85,678.00/x
  3. Step 3: Cross multiply
    157,298.15x = 217,074.79 × 85,678.00
  4. Step 4: Simplify right side
    157,298.15x = 18,598,534,161.14
  5. Step 5: Solve for x
    x = 18,598,534,161.14/157,298.15
  6. Step 6: Final answer
    x = 118,237.46

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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.