Home / 187,013.59-258,079.70-102,130.65

Finding the Fourth Proportional to 187,013.59, 258,079.70 and 102,130.65

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Solution

The fourth proportional to 187,013.59, 258,079.70 and 102,130.65 is: 140,940.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,013.59 : 258,079.70 = 102,130.65 : x
  2. Step 2: Convert to fraction form
    187,013.59/258,079.70 = 102,130.65/x
  3. Step 3: Cross multiply
    187,013.59x = 258,079.70 × 102,130.65
  4. Step 4: Simplify right side
    187,013.59x = 26,357,847,512.81
  5. Step 5: Solve for x
    x = 26,357,847,512.81/187,013.59
  6. Step 6: Final answer
    x = 140,940.81

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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.