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Finding the Fourth Proportional to 160,638.63, 221,690.15 and 89,017.08

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Solution

The fourth proportional to 160,638.63, 221,690.15 and 89,017.08 is: 122,848.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,638.63 : 221,690.15 = 89,017.08 : x
  2. Step 2: Convert to fraction form
    160,638.63/221,690.15 = 89,017.08/x
  3. Step 3: Cross multiply
    160,638.63x = 221,690.15 × 89,017.08
  4. Step 4: Simplify right side
    160,638.63x = 19,734,209,817.76
  5. Step 5: Solve for x
    x = 19,734,209,817.76/160,638.63
  6. Step 6: Final answer
    x = 122,848.47

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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.