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Finding the Fourth Proportional to 152,472.51, 210,412.08 and 85,404.51

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Solution

The fourth proportional to 152,472.51, 210,412.08 and 85,404.51 is: 117,858.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,472.51 : 210,412.08 = 85,404.51 : x
  2. Step 2: Convert to fraction form
    152,472.51/210,412.08 = 85,404.51/x
  3. Step 3: Cross multiply
    152,472.51x = 210,412.08 × 85,404.51
  4. Step 4: Simplify right side
    152,472.51x = 17,970,140,590.48
  5. Step 5: Solve for x
    x = 17,970,140,590.48/152,472.51
  6. Step 6: Final answer
    x = 117,858.23

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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.