Home / 113,237.06-156,289.79-86,331.51

Finding the Fourth Proportional to 113,237.06, 156,289.79 and 86,331.51

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Solution

The fourth proportional to 113,237.06, 156,289.79 and 86,331.51 is: 119,154.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,237.06 : 156,289.79 = 86,331.51 : x
  2. Step 2: Convert to fraction form
    113,237.06/156,289.79 = 86,331.51/x
  3. Step 3: Cross multiply
    113,237.06x = 156,289.79 × 86,331.51
  4. Step 4: Simplify right side
    113,237.06x = 13,492,733,784.11
  5. Step 5: Solve for x
    x = 13,492,733,784.11/113,237.06
  6. Step 6: Final answer
    x = 119,154.76

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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.