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Finding the Fourth Proportional to 130,111, 179,553.30 and 70,495

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Solution

The fourth proportional to 130,111, 179,553.30 and 70,495 is: 97,283.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,111 : 179,553.30 = 70,495 : x
  2. Step 2: Convert to fraction form
    130,111/179,553.30 = 70,495/x
  3. Step 3: Cross multiply
    130,111x = 179,553.30 × 70,495
  4. Step 4: Simplify right side
    130,111x = 12,657,609,883.50
  5. Step 5: Solve for x
    x = 12,657,609,883.50/130,111
  6. Step 6: Final answer
    x = 97,283.17

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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.