Home / 155,965.37-215,232.80-84,345.98

Finding the Fourth Proportional to 155,965.37, 215,232.80 and 84,345.98

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Solution

The fourth proportional to 155,965.37, 215,232.80 and 84,345.98 is: 116,397.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,965.37 : 215,232.80 = 84,345.98 : x
  2. Step 2: Convert to fraction form
    155,965.37/215,232.80 = 84,345.98/x
  3. Step 3: Cross multiply
    155,965.37x = 215,232.80 × 84,345.98
  4. Step 4: Simplify right side
    155,965.37x = 18,154,019,946.25
  5. Step 5: Solve for x
    x = 18,154,019,946.25/155,965.37
  6. Step 6: Final answer
    x = 116,397.77

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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.