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Finding the Fourth Proportional to 113,785.40, 170,678.10 and 57,798.20

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Solution

The fourth proportional to 113,785.40, 170,678.10 and 57,798.20 is: 86,697.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,785.40 : 170,678.10 = 57,798.20 : x
  2. Step 2: Convert to fraction form
    113,785.40/170,678.10 = 57,798.20/x
  3. Step 3: Cross multiply
    113,785.40x = 170,678.10 × 57,798.20
  4. Step 4: Simplify right side
    113,785.40x = 9,864,886,959.42
  5. Step 5: Solve for x
    x = 9,864,886,959.42/113,785.40
  6. Step 6: Final answer
    x = 86,697.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.