Home / 155,882.02-215,109.12-87,897.10

Finding the Fourth Proportional to 155,882.02, 215,109.12 and 87,897.10

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Solution

The fourth proportional to 155,882.02, 215,109.12 and 87,897.10 is: 121,293.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,882.02 : 215,109.12 = 87,897.10 : x
  2. Step 2: Convert to fraction form
    155,882.02/215,109.12 = 87,897.10/x
  3. Step 3: Cross multiply
    155,882.02x = 215,109.12 × 87,897.10
  4. Step 4: Simplify right side
    155,882.02x = 18,907,467,831.55
  5. Step 5: Solve for x
    x = 18,907,467,831.55/155,882.02
  6. Step 6: Final answer
    x = 121,293.45

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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.