Home / 190,988.40-286,492.32-71,018.76

Finding the Fourth Proportional to 190,988.40, 286,492.32 and 71,018.76

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Solution

The fourth proportional to 190,988.40, 286,492.32 and 71,018.76 is: 106,531.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,988.40 : 286,492.32 = 71,018.76 : x
  2. Step 2: Convert to fraction form
    190,988.40/286,492.32 = 71,018.76/x
  3. Step 3: Cross multiply
    190,988.40x = 286,492.32 × 71,018.76
  4. Step 4: Simplify right side
    190,988.40x = 20,346,329,315.92
  5. Step 5: Solve for x
    x = 20,346,329,315.92/190,988.40
  6. Step 6: Final answer
    x = 106,531.75

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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.