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Finding the Fourth Proportional to 113,215.80, 169,823.70 and 102,718.20

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Solution

The fourth proportional to 113,215.80, 169,823.70 and 102,718.20 is: 154,077.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,215.80 : 169,823.70 = 102,718.20 : x
  2. Step 2: Convert to fraction form
    113,215.80/169,823.70 = 102,718.20/x
  3. Step 3: Cross multiply
    113,215.80x = 169,823.70 × 102,718.20
  4. Step 4: Simplify right side
    113,215.80x = 17,443,984,781.34
  5. Step 5: Solve for x
    x = 17,443,984,781.34/113,215.80
  6. Step 6: Final answer
    x = 154,077.30

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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.