Home / 218,931.14-302,133.95-138,329.26

Finding the Fourth Proportional to 218,931.14, 302,133.95 and 138,329.26

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Solution

The fourth proportional to 218,931.14, 302,133.95 and 138,329.26 is: 190,900.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,931.14 : 302,133.95 = 138,329.26 : x
  2. Step 2: Convert to fraction form
    218,931.14/302,133.95 = 138,329.26/x
  3. Step 3: Cross multiply
    218,931.14x = 302,133.95 × 138,329.26
  4. Step 4: Simplify right side
    218,931.14x = 41,793,964,277.40
  5. Step 5: Solve for x
    x = 41,793,964,277.40/218,931.14
  6. Step 6: Final answer
    x = 190,900.04

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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.