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Finding the Fourth Proportional to 152,457.37, 210,406.74 and 87,929.12

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Solution

The fourth proportional to 152,457.37, 210,406.74 and 87,929.12 is: 121,351.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,457.37 : 210,406.74 = 87,929.12 : x
  2. Step 2: Convert to fraction form
    152,457.37/210,406.74 = 87,929.12/x
  3. Step 3: Cross multiply
    152,457.37x = 210,406.74 × 87,929.12
  4. Step 4: Simplify right side
    152,457.37x = 18,500,879,490.27
  5. Step 5: Solve for x
    x = 18,500,879,490.27/152,457.37
  6. Step 6: Final answer
    x = 121,351.17

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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.