Home / 210,931.20-316,346.88-61,131.84

Finding the Fourth Proportional to 210,931.20, 316,346.88 and 61,131.84

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Solution

The fourth proportional to 210,931.20, 316,346.88 and 61,131.84 is: 91,683.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,931.20 : 316,346.88 = 61,131.84 : x
  2. Step 2: Convert to fraction form
    210,931.20/316,346.88 = 61,131.84/x
  3. Step 3: Cross multiply
    210,931.20x = 316,346.88 × 61,131.84
  4. Step 4: Simplify right side
    210,931.20x = 19,338,866,852.66
  5. Step 5: Solve for x
    x = 19,338,866,852.66/210,931.20
  6. Step 6: Final answer
    x = 91,683.29

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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.