Home / 102,670.36-141,355.74-89,416.60

Finding the Fourth Proportional to 102,670.36, 141,355.74 and 89,416.60

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Solution

The fourth proportional to 102,670.36, 141,355.74 and 89,416.60 is: 123,108.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,670.36 : 141,355.74 = 89,416.60 : x
  2. Step 2: Convert to fraction form
    102,670.36/141,355.74 = 89,416.60/x
  3. Step 3: Cross multiply
    102,670.36x = 141,355.74 × 89,416.60
  4. Step 4: Simplify right side
    102,670.36x = 12,639,549,661.28
  5. Step 5: Solve for x
    x = 12,639,549,661.28/102,670.36
  6. Step 6: Final answer
    x = 123,108.07

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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.