Home / 112,186.89-154,809.18-64,431

Finding the Fourth Proportional to 112,186.89, 154,809.18 and 64,431

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Solution

The fourth proportional to 112,186.89, 154,809.18 and 64,431 is: 88,909.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,186.89 : 154,809.18 = 64,431 : x
  2. Step 2: Convert to fraction form
    112,186.89/154,809.18 = 64,431/x
  3. Step 3: Cross multiply
    112,186.89x = 154,809.18 × 64,431
  4. Step 4: Simplify right side
    112,186.89x = 9,974,510,276.58
  5. Step 5: Solve for x
    x = 9,974,510,276.58/112,186.89
  6. Step 6: Final answer
    x = 88,909.77

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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.