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Finding the Fourth Proportional to 152,398.49, 210,289.99 and 87,870.16

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Solution

The fourth proportional to 152,398.49, 210,289.99 and 87,870.16 is: 121,249.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,398.49 : 210,289.99 = 87,870.16 : x
  2. Step 2: Convert to fraction form
    152,398.49/210,289.99 = 87,870.16/x
  3. Step 3: Cross multiply
    152,398.49x = 210,289.99 × 87,870.16
  4. Step 4: Simplify right side
    152,398.49x = 18,478,213,576.90
  5. Step 5: Solve for x
    x = 18,478,213,576.90/152,398.49
  6. Step 6: Final answer
    x = 121,249.32

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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.