Home / 155,862.02-215,089.63-87,879.13

Finding the Fourth Proportional to 155,862.02, 215,089.63 and 87,879.13

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Solution

The fourth proportional to 155,862.02, 215,089.63 and 87,879.13 is: 121,273.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,862.02 : 215,089.63 = 87,879.13 : x
  2. Step 2: Convert to fraction form
    155,862.02/215,089.63 = 87,879.13/x
  3. Step 3: Cross multiply
    155,862.02x = 215,089.63 × 87,879.13
  4. Step 4: Simplify right side
    155,862.02x = 18,901,888,799.00
  5. Step 5: Solve for x
    x = 18,901,888,799.00/155,862.02
  6. Step 6: Final answer
    x = 121,273.22

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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.