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Finding the Fourth Proportional to 160,048.31, 240,223.19 and 81,219.11

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Solution

The fourth proportional to 160,048.31, 240,223.19 and 81,219.11 is: 121,905.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,048.31 : 240,223.19 = 81,219.11 : x
  2. Step 2: Convert to fraction form
    160,048.31/240,223.19 = 81,219.11/x
  3. Step 3: Cross multiply
    160,048.31x = 240,223.19 × 81,219.11
  4. Step 4: Simplify right side
    160,048.31x = 19,510,712,085.95
  5. Step 5: Solve for x
    x = 19,510,712,085.95/160,048.31
  6. Step 6: Final answer
    x = 121,905.15

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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.