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Finding the Fourth Proportional to 164,043.30, 245,870.55 and 85,116.90

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Solution

The fourth proportional to 164,043.30, 245,870.55 and 85,116.90 is: 127,574.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    164,043.30 : 245,870.55 = 85,116.90 : x
  2. Step 2: Convert to fraction form
    164,043.30/245,870.55 = 85,116.90/x
  3. Step 3: Cross multiply
    164,043.30x = 245,870.55 × 85,116.90
  4. Step 4: Simplify right side
    164,043.30x = 20,927,739,017.30
  5. Step 5: Solve for x
    x = 20,927,739,017.30/164,043.30
  6. Step 6: Final answer
    x = 127,574.48

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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.