Home / 124,509.02-172,009.80-81,590.49

Finding the Fourth Proportional to 124,509.02, 172,009.80 and 81,590.49

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Solution

The fourth proportional to 124,509.02, 172,009.80 and 81,590.49 is: 112,717.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,509.02 : 172,009.80 = 81,590.49 : x
  2. Step 2: Convert to fraction form
    124,509.02/172,009.80 = 81,590.49/x
  3. Step 3: Cross multiply
    124,509.02x = 172,009.80 × 81,590.49
  4. Step 4: Simplify right side
    124,509.02x = 14,034,363,866.80
  5. Step 5: Solve for x
    x = 14,034,363,866.80/124,509.02
  6. Step 6: Final answer
    x = 112,717.65

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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.