Home / 109,688.04-151,223.11-87,101.79

Finding the Fourth Proportional to 109,688.04, 151,223.11 and 87,101.79

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Solution

The fourth proportional to 109,688.04, 151,223.11 and 87,101.79 is: 120,084.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,688.04 : 151,223.11 = 87,101.79 : x
  2. Step 2: Convert to fraction form
    109,688.04/151,223.11 = 87,101.79/x
  3. Step 3: Cross multiply
    109,688.04x = 151,223.11 × 87,101.79
  4. Step 4: Simplify right side
    109,688.04x = 13,171,803,570.37
  5. Step 5: Solve for x
    x = 13,171,803,570.37/109,688.04
  6. Step 6: Final answer
    x = 120,084.23

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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.