Home / 130,001.14-179,409.90-72,640.63

Finding the Fourth Proportional to 130,001.14, 179,409.90 and 72,640.63

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Solution

The fourth proportional to 130,001.14, 179,409.90 and 72,640.63 is: 100,248.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,001.14 : 179,409.90 = 72,640.63 : x
  2. Step 2: Convert to fraction form
    130,001.14/179,409.90 = 72,640.63/x
  3. Step 3: Cross multiply
    130,001.14x = 179,409.90 × 72,640.63
  4. Step 4: Simplify right side
    130,001.14x = 13,032,448,164.24
  5. Step 5: Solve for x
    x = 13,032,448,164.24/130,001.14
  6. Step 6: Final answer
    x = 100,248.72

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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.