Home / 125,119.02-172,648.47-99,689.82

Finding the Fourth Proportional to 125,119.02, 172,648.47 and 99,689.82

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Solution

The fourth proportional to 125,119.02, 172,648.47 and 99,689.82 is: 137,559.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,119.02 : 172,648.47 = 99,689.82 : x
  2. Step 2: Convert to fraction form
    125,119.02/172,648.47 = 99,689.82/x
  3. Step 3: Cross multiply
    125,119.02x = 172,648.47 × 99,689.82
  4. Step 4: Simplify right side
    125,119.02x = 17,211,294,897.58
  5. Step 5: Solve for x
    x = 17,211,294,897.58/125,119.02
  6. Step 6: Final answer
    x = 137,559.38

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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.