Home / 124,897.02-172,305.63-81,886.86

Finding the Fourth Proportional to 124,897.02, 172,305.63 and 81,886.86

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Solution

The fourth proportional to 124,897.02, 172,305.63 and 81,886.86 is: 112,969.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,897.02 : 172,305.63 = 81,886.86 : x
  2. Step 2: Convert to fraction form
    124,897.02/172,305.63 = 81,886.86/x
  3. Step 3: Cross multiply
    124,897.02x = 172,305.63 × 81,886.86
  4. Step 4: Simplify right side
    124,897.02x = 14,109,567,001.02
  5. Step 5: Solve for x
    x = 14,109,567,001.02/124,897.02
  6. Step 6: Final answer
    x = 112,969.60

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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.