Home / 131,389.80-181,318.13-74,801.18

Finding the Fourth Proportional to 131,389.80, 181,318.13 and 74,801.18

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Solution

The fourth proportional to 131,389.80, 181,318.13 and 74,801.18 is: 103,225.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,389.80 : 181,318.13 = 74,801.18 : x
  2. Step 2: Convert to fraction form
    131,389.80/181,318.13 = 74,801.18/x
  3. Step 3: Cross multiply
    131,389.80x = 181,318.13 × 74,801.18
  4. Step 4: Simplify right side
    131,389.80x = 13,562,808,798.80
  5. Step 5: Solve for x
    x = 13,562,808,798.80/131,389.80
  6. Step 6: Final answer
    x = 103,225.74

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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.