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Finding the Fourth Proportional to 152,881.92, 210,990.24 and 89,240.16

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Solution

The fourth proportional to 152,881.92, 210,990.24 and 89,240.16 is: 123,159.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,881.92 : 210,990.24 = 89,240.16 : x
  2. Step 2: Convert to fraction form
    152,881.92/210,990.24 = 89,240.16/x
  3. Step 3: Cross multiply
    152,881.92x = 210,990.24 × 89,240.16
  4. Step 4: Simplify right side
    152,881.92x = 18,828,802,776.04
  5. Step 5: Solve for x
    x = 18,828,802,776.04/152,881.92
  6. Step 6: Final answer
    x = 123,159.12

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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.