Home / 157,427.69-217,252.40-85,807.58

Finding the Fourth Proportional to 157,427.69, 217,252.40 and 85,807.58

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Solution

The fourth proportional to 157,427.69, 217,252.40 and 85,807.58 is: 118,415.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,427.69 : 217,252.40 = 85,807.58 : x
  2. Step 2: Convert to fraction form
    157,427.69/217,252.40 = 85,807.58/x
  3. Step 3: Cross multiply
    157,427.69x = 217,252.40 × 85,807.58
  4. Step 4: Simplify right side
    157,427.69x = 18,641,901,177.89
  5. Step 5: Solve for x
    x = 18,641,901,177.89/157,427.69
  6. Step 6: Final answer
    x = 118,415.65

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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.