Home / 93,140.13-128,288.52-71,588.66

Finding the Fourth Proportional to 93,140.13, 128,288.52 and 71,588.66

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Solution

The fourth proportional to 93,140.13, 128,288.52 and 71,588.66 is: 98,604.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,140.13 : 128,288.52 = 71,588.66 : x
  2. Step 2: Convert to fraction form
    93,140.13/128,288.52 = 71,588.66/x
  3. Step 3: Cross multiply
    93,140.13x = 128,288.52 × 71,588.66
  4. Step 4: Simplify right side
    93,140.13x = 9,184,002,598.74
  5. Step 5: Solve for x
    x = 9,184,002,598.74/93,140.13
  6. Step 6: Final answer
    x = 98,604.14

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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.