Home / 140,643.40-194,088.12-76,985.23

Finding the Fourth Proportional to 140,643.40, 194,088.12 and 76,985.23

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Solution

The fourth proportional to 140,643.40, 194,088.12 and 76,985.23 is: 106,239.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,643.40 : 194,088.12 = 76,985.23 : x
  2. Step 2: Convert to fraction form
    140,643.40/194,088.12 = 76,985.23/x
  3. Step 3: Cross multiply
    140,643.40x = 194,088.12 × 76,985.23
  4. Step 4: Simplify right side
    140,643.40x = 14,941,918,558.47
  5. Step 5: Solve for x
    x = 14,941,918,558.47/140,643.40
  6. Step 6: Final answer
    x = 106,239.74

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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.