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Finding the Fourth Proportional to 152,275.16, 210,161.84 and 87,731.84

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Solution

The fourth proportional to 152,275.16, 210,161.84 and 87,731.84 is: 121,082.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,275.16 : 210,161.84 = 87,731.84 : x
  2. Step 2: Convert to fraction form
    152,275.16/210,161.84 = 87,731.84/x
  3. Step 3: Cross multiply
    152,275.16x = 210,161.84 × 87,731.84
  4. Step 4: Simplify right side
    152,275.16x = 18,437,884,920.99
  5. Step 5: Solve for x
    x = 18,437,884,920.99/152,275.16
  6. Step 6: Final answer
    x = 121,082.68

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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.