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Finding the Fourth Proportional to 144,520.04, 216,802.56 and 85,398.32

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Solution

The fourth proportional to 144,520.04, 216,802.56 and 85,398.32 is: 128,110.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,520.04 : 216,802.56 = 85,398.32 : x
  2. Step 2: Convert to fraction form
    144,520.04/216,802.56 = 85,398.32/x
  3. Step 3: Cross multiply
    144,520.04x = 216,802.56 × 85,398.32
  4. Step 4: Simplify right side
    144,520.04x = 18,514,574,395.70
  5. Step 5: Solve for x
    x = 18,514,574,395.70/144,520.04
  6. Step 6: Final answer
    x = 128,110.78

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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.