Home / 138,802.95-191,548.04-75,140.70

Finding the Fourth Proportional to 138,802.95, 191,548.04 and 75,140.70

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Solution

The fourth proportional to 138,802.95, 191,548.04 and 75,140.70 is: 103,694.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,802.95 : 191,548.04 = 75,140.70 : x
  2. Step 2: Convert to fraction form
    138,802.95/191,548.04 = 75,140.70/x
  3. Step 3: Cross multiply
    138,802.95x = 191,548.04 × 75,140.70
  4. Step 4: Simplify right side
    138,802.95x = 14,393,053,433.52
  5. Step 5: Solve for x
    x = 14,393,053,433.52/138,802.95
  6. Step 6: Final answer
    x = 103,694.15

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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.