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Finding the Fourth Proportional to 104,875.84, 144,628 and 70,889.28

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Solution

The fourth proportional to 104,875.84, 144,628 and 70,889.28 is: 97,759.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,875.84 : 144,628 = 70,889.28 : x
  2. Step 2: Convert to fraction form
    104,875.84/144,628 = 70,889.28/x
  3. Step 3: Cross multiply
    104,875.84x = 144,628 × 70,889.28
  4. Step 4: Simplify right side
    104,875.84x = 10,252,574,787.84
  5. Step 5: Solve for x
    x = 10,252,574,787.84/104,875.84
  6. Step 6: Final answer
    x = 97,759.17

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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.