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Finding the Fourth Proportional to 113,020.84, 155,952.84 and 67,688.20

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Solution

The fourth proportional to 113,020.84, 155,952.84 and 67,688.20 is: 93,400.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,020.84 : 155,952.84 = 67,688.20 : x
  2. Step 2: Convert to fraction form
    113,020.84/155,952.84 = 67,688.20/x
  3. Step 3: Cross multiply
    113,020.84x = 155,952.84 × 67,688.20
  4. Step 4: Simplify right side
    113,020.84x = 10,556,167,024.49
  5. Step 5: Solve for x
    x = 10,556,167,024.49/113,020.84
  6. Step 6: Final answer
    x = 93,400.18

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1.5x scale

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.