Home / 102,528.30-153,792.45-72,785.10

Finding the Fourth Proportional to 102,528.30, 153,792.45 and 72,785.10

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Solution

The fourth proportional to 102,528.30, 153,792.45 and 72,785.10 is: 109,177.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,528.30 : 153,792.45 = 72,785.10 : x
  2. Step 2: Convert to fraction form
    102,528.30/153,792.45 = 72,785.10/x
  3. Step 3: Cross multiply
    102,528.30x = 153,792.45 × 72,785.10
  4. Step 4: Simplify right side
    102,528.30x = 11,193,798,852.50
  5. Step 5: Solve for x
    x = 11,193,798,852.50/102,528.30
  6. Step 6: Final answer
    x = 109,177.65

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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.