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Finding the Fourth Proportional to 113,111.40, 169,715.70 and 57,707.40

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Solution

The fourth proportional to 113,111.40, 169,715.70 and 57,707.40 is: 86,585.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,111.40 : 169,715.70 = 57,707.40 : x
  2. Step 2: Convert to fraction form
    113,111.40/169,715.70 = 57,707.40/x
  3. Step 3: Cross multiply
    113,111.40x = 169,715.70 × 57,707.40
  4. Step 4: Simplify right side
    113,111.40x = 9,793,851,786.18
  5. Step 5: Solve for x
    x = 9,793,851,786.18/113,111.40
  6. Step 6: Final answer
    x = 86,585.89

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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.