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Finding the Fourth Proportional to 152,659.94, 210,653.24 and 88,128.92

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Solution

The fourth proportional to 152,659.94, 210,653.24 and 88,128.92 is: 121,607.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,659.94 : 210,653.24 = 88,128.92 : x
  2. Step 2: Convert to fraction form
    152,659.94/210,653.24 = 88,128.92/x
  3. Step 3: Cross multiply
    152,659.94x = 210,653.24 × 88,128.92
  4. Step 4: Simplify right side
    152,659.94x = 18,564,642,621.69
  5. Step 5: Solve for x
    x = 18,564,642,621.69/152,659.94
  6. Step 6: Final answer
    x = 121,607.82

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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.