Home / 102,132.90-140,970.38-71,927.19

Finding the Fourth Proportional to 102,132.90, 140,970.38 and 71,927.19

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Solution

The fourth proportional to 102,132.90, 140,970.38 and 71,927.19 is: 99,278.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,132.90 : 140,970.38 = 71,927.19 : x
  2. Step 2: Convert to fraction form
    102,132.90/140,970.38 = 71,927.19/x
  3. Step 3: Cross multiply
    102,132.90x = 140,970.38 × 71,927.19
  4. Step 4: Simplify right side
    102,132.90x = 10,139,602,947.00
  5. Step 5: Solve for x
    x = 10,139,602,947.00/102,132.90
  6. Step 6: Final answer
    x = 99,278.52

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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.