Home / 178,023.83-245,631.59-105,390.21

Finding the Fourth Proportional to 178,023.83, 245,631.59 and 105,390.21

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Solution

The fourth proportional to 178,023.83, 245,631.59 and 105,390.21 is: 145,414.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,023.83 : 245,631.59 = 105,390.21 : x
  2. Step 2: Convert to fraction form
    178,023.83/245,631.59 = 105,390.21/x
  3. Step 3: Cross multiply
    178,023.83x = 245,631.59 × 105,390.21
  4. Step 4: Simplify right side
    178,023.83x = 25,887,165,642.11
  5. Step 5: Solve for x
    x = 25,887,165,642.11/178,023.83
  6. Step 6: Final answer
    x = 145,414.05

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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.