Home / 93,439.36-128,901.49-61,159.78

Finding the Fourth Proportional to 93,439.36, 128,901.49 and 61,159.78

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Solution

The fourth proportional to 93,439.36, 128,901.49 and 61,159.78 is: 84,371.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,439.36 : 128,901.49 = 61,159.78 : x
  2. Step 2: Convert to fraction form
    93,439.36/128,901.49 = 61,159.78/x
  3. Step 3: Cross multiply
    93,439.36x = 128,901.49 × 61,159.78
  4. Step 4: Simplify right side
    93,439.36x = 7,883,586,770.07
  5. Step 5: Solve for x
    x = 7,883,586,770.07/93,439.36
  6. Step 6: Final answer
    x = 84,371.16

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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.