Home / 145,964.20-218,946.30-128,468.20

Finding the Fourth Proportional to 145,964.20, 218,946.30 and 128,468.20

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Solution

The fourth proportional to 145,964.20, 218,946.30 and 128,468.20 is: 192,702.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,964.20 : 218,946.30 = 128,468.20 : x
  2. Step 2: Convert to fraction form
    145,964.20/218,946.30 = 128,468.20/x
  3. Step 3: Cross multiply
    145,964.20x = 218,946.30 × 128,468.20
  4. Step 4: Simplify right side
    145,964.20x = 28,127,637,057.66
  5. Step 5: Solve for x
    x = 28,127,637,057.66/145,964.20
  6. Step 6: Final answer
    x = 192,702.30

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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.