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Finding the Fourth Proportional to 152,412.10, 210,326.42 and 84,428.87

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Solution

The fourth proportional to 152,412.10, 210,326.42 and 84,428.87 is: 116,510.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,412.10 : 210,326.42 = 84,428.87 : x
  2. Step 2: Convert to fraction form
    152,412.10/210,326.42 = 84,428.87/x
  3. Step 3: Cross multiply
    152,412.10x = 210,326.42 × 84,428.87
  4. Step 4: Simplify right side
    152,412.10x = 17,757,621,131.19
  5. Step 5: Solve for x
    x = 17,757,621,131.19/152,412.10
  6. Step 6: Final answer
    x = 116,510.58

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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.