Home / 211,054.80-316,531-70,777.04

Finding the Fourth Proportional to 211,054.80, 316,531 and 70,777.04

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Solution

The fourth proportional to 211,054.80, 316,531 and 70,777.04 is: 106,148.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,054.80 : 316,531 = 70,777.04 : x
  2. Step 2: Convert to fraction form
    211,054.80/316,531 = 70,777.04/x
  3. Step 3: Cross multiply
    211,054.80x = 316,531 × 70,777.04
  4. Step 4: Simplify right side
    211,054.80x = 22,403,127,248.24
  5. Step 5: Solve for x
    x = 22,403,127,248.24/211,054.80
  6. Step 6: Final answer
    x = 106,148.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.