Home / 152,412.09-210,336.11-91,981.63

Finding the Fourth Proportional to 152,412.09, 210,336.11 and 91,981.63

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Solution

The fourth proportional to 152,412.09, 210,336.11 and 91,981.63 is: 126,939.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,412.09 : 210,336.11 = 91,981.63 : x
  2. Step 2: Convert to fraction form
    152,412.09/210,336.11 = 91,981.63/x
  3. Step 3: Cross multiply
    152,412.09x = 210,336.11 × 91,981.63
  4. Step 4: Simplify right side
    152,412.09x = 19,347,058,393.60
  5. Step 5: Solve for x
    x = 19,347,058,393.60/152,412.09
  6. Step 6: Final answer
    x = 126,939.14

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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.