Home / 190,316.76-285,475.14-79,431

Finding the Fourth Proportional to 190,316.76, 285,475.14 and 79,431

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Solution

The fourth proportional to 190,316.76, 285,475.14 and 79,431 is: 119,146.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,316.76 : 285,475.14 = 79,431 : x
  2. Step 2: Convert to fraction form
    190,316.76/285,475.14 = 79,431/x
  3. Step 3: Cross multiply
    190,316.76x = 285,475.14 × 79,431
  4. Step 4: Simplify right side
    190,316.76x = 22,675,575,845.34
  5. Step 5: Solve for x
    x = 22,675,575,845.34/190,316.76
  6. Step 6: Final answer
    x = 119,146.50

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1.5x scale

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.