Home / 103,119.64-142,316.88-57,809.84

Finding the Fourth Proportional to 103,119.64, 142,316.88 and 57,809.84

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Solution

The fourth proportional to 103,119.64, 142,316.88 and 57,809.84 is: 79,784.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,119.64 : 142,316.88 = 57,809.84 : x
  2. Step 2: Convert to fraction form
    103,119.64/142,316.88 = 57,809.84/x
  3. Step 3: Cross multiply
    103,119.64x = 142,316.88 × 57,809.84
  4. Step 4: Simplify right side
    103,119.64x = 8,227,316,062.10
  5. Step 5: Solve for x
    x = 8,227,316,062.10/103,119.64
  6. Step 6: Final answer
    x = 79,784.18

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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.