Home / 140,870.07-211,492.80-81,748.17

Finding the Fourth Proportional to 140,870.07, 211,492.80 and 81,748.17

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Solution

The fourth proportional to 140,870.07, 211,492.80 and 81,748.17 is: 122,731.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,870.07 : 211,492.80 = 81,748.17 : x
  2. Step 2: Convert to fraction form
    140,870.07/211,492.80 = 81,748.17/x
  3. Step 3: Cross multiply
    140,870.07x = 211,492.80 × 81,748.17
  4. Step 4: Simplify right side
    140,870.07x = 17,289,149,368.18
  5. Step 5: Solve for x
    x = 17,289,149,368.18/140,870.07
  6. Step 6: Final answer
    x = 122,731.18

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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.