Home / 144,519.04-216,801.06-85,397.32

Finding the Fourth Proportional to 144,519.04, 216,801.06 and 85,397.32

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Solution

The fourth proportional to 144,519.04, 216,801.06 and 85,397.32 is: 128,109.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,519.04 : 216,801.06 = 85,397.32 : x
  2. Step 2: Convert to fraction form
    144,519.04/216,801.06 = 85,397.32/x
  3. Step 3: Cross multiply
    144,519.04x = 216,801.06 × 85,397.32
  4. Step 4: Simplify right side
    144,519.04x = 18,514,229,497.16
  5. Step 5: Solve for x
    x = 18,514,229,497.16/144,519.04
  6. Step 6: Final answer
    x = 128,109.28

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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.