Home / 144,030.51-198,855.73-128,897.15

Finding the Fourth Proportional to 144,030.51, 198,855.73 and 128,897.15

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Solution

The fourth proportional to 144,030.51, 198,855.73 and 128,897.15 is: 177,961.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,030.51 : 198,855.73 = 128,897.15 : x
  2. Step 2: Convert to fraction form
    144,030.51/198,855.73 = 128,897.15/x
  3. Step 3: Cross multiply
    144,030.51x = 198,855.73 × 128,897.15
  4. Step 4: Simplify right side
    144,030.51x = 25,631,937,033.07
  5. Step 5: Solve for x
    x = 25,631,937,033.07/144,030.51
  6. Step 6: Final answer
    x = 177,961.86

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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.