Home / 157,419.02-217,242.86-85,803.68

Finding the Fourth Proportional to 157,419.02, 217,242.86 and 85,803.68

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Solution

The fourth proportional to 157,419.02, 217,242.86 and 85,803.68 is: 118,411.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,419.02 : 217,242.86 = 85,803.68 : x
  2. Step 2: Convert to fraction form
    157,419.02/217,242.86 = 85,803.68/x
  3. Step 3: Cross multiply
    157,419.02x = 217,242.86 × 85,803.68
  4. Step 4: Simplify right side
    157,419.02x = 18,640,235,326.49
  5. Step 5: Solve for x
    x = 18,640,235,326.49/157,419.02
  6. Step 6: Final answer
    x = 118,411.59

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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.