Home / 88,035.39-121,513.77-72,157.77

Finding the Fourth Proportional to 88,035.39, 121,513.77 and 72,157.77

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Solution

The fourth proportional to 88,035.39, 121,513.77 and 72,157.77 is: 99,598.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,035.39 : 121,513.77 = 72,157.77 : x
  2. Step 2: Convert to fraction form
    88,035.39/121,513.77 = 72,157.77/x
  3. Step 3: Cross multiply
    88,035.39x = 121,513.77 × 72,157.77
  4. Step 4: Simplify right side
    88,035.39x = 8,768,162,667.49
  5. Step 5: Solve for x
    x = 8,768,162,667.49/88,035.39
  6. Step 6: Final answer
    x = 99,598.16

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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.