Home / 159,354.12-219,859.02-90,432.15

Finding the Fourth Proportional to 159,354.12, 219,859.02 and 90,432.15

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Solution

The fourth proportional to 159,354.12, 219,859.02 and 90,432.15 is: 124,768.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,354.12 : 219,859.02 = 90,432.15 : x
  2. Step 2: Convert to fraction form
    159,354.12/219,859.02 = 90,432.15/x
  3. Step 3: Cross multiply
    159,354.12x = 219,859.02 × 90,432.15
  4. Step 4: Simplify right side
    159,354.12x = 19,882,323,875.49
  5. Step 5: Solve for x
    x = 19,882,323,875.49/159,354.12
  6. Step 6: Final answer
    x = 124,768.18

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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.