Home / 151,402.23-209,018.88-90,987.57

Finding the Fourth Proportional to 151,402.23, 209,018.88 and 90,987.57

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Solution

The fourth proportional to 151,402.23, 209,018.88 and 90,987.57 is: 125,613.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,402.23 : 209,018.88 = 90,987.57 : x
  2. Step 2: Convert to fraction form
    151,402.23/209,018.88 = 90,987.57/x
  3. Step 3: Cross multiply
    151,402.23x = 209,018.88 × 90,987.57
  4. Step 4: Simplify right side
    151,402.23x = 19,018,119,975.32
  5. Step 5: Solve for x
    x = 19,018,119,975.32/151,402.23
  6. Step 6: Final answer
    x = 125,613.21

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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.