Home / 123,547.60-185,321.40-76,891.60

Finding the Fourth Proportional to 123,547.60, 185,321.40 and 76,891.60

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Solution

The fourth proportional to 123,547.60, 185,321.40 and 76,891.60 is: 115,337.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,547.60 : 185,321.40 = 76,891.60 : x
  2. Step 2: Convert to fraction form
    123,547.60/185,321.40 = 76,891.60/x
  3. Step 3: Cross multiply
    123,547.60x = 185,321.40 × 76,891.60
  4. Step 4: Simplify right side
    123,547.60x = 14,249,658,960.24
  5. Step 5: Solve for x
    x = 14,249,658,960.24/123,547.60
  6. Step 6: Final answer
    x = 115,337.40

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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.