Home / 93,432.48-128,939.83-53,145.21

Finding the Fourth Proportional to 93,432.48, 128,939.83 and 53,145.21

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Solution

The fourth proportional to 93,432.48, 128,939.83 and 53,145.21 is: 73,342.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,432.48 : 128,939.83 = 53,145.21 : x
  2. Step 2: Convert to fraction form
    93,432.48/128,939.83 = 53,145.21/x
  3. Step 3: Cross multiply
    93,432.48x = 128,939.83 × 53,145.21
  4. Step 4: Simplify right side
    93,432.48x = 6,852,534,086.80
  5. Step 5: Solve for x
    x = 6,852,534,086.80/93,432.48
  6. Step 6: Final answer
    x = 73,342.10

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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.