Home / 131,089.23-180,918.50-74,509.11

Finding the Fourth Proportional to 131,089.23, 180,918.50 and 74,509.11

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Solution

The fourth proportional to 131,089.23, 180,918.50 and 74,509.11 is: 102,831.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,089.23 : 180,918.50 = 74,509.11 : x
  2. Step 2: Convert to fraction form
    131,089.23/180,918.50 = 74,509.11/x
  3. Step 3: Cross multiply
    131,089.23x = 180,918.50 × 74,509.11
  4. Step 4: Simplify right side
    131,089.23x = 13,480,076,417.54
  5. Step 5: Solve for x
    x = 13,480,076,417.54/131,089.23
  6. Step 6: Final answer
    x = 102,831.30

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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.