Home / 103,280.47-142,508.12-69,338.23

Finding the Fourth Proportional to 103,280.47, 142,508.12 and 69,338.23

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Solution

The fourth proportional to 103,280.47, 142,508.12 and 69,338.23 is: 95,674.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,280.47 : 142,508.12 = 69,338.23 : x
  2. Step 2: Convert to fraction form
    103,280.47/142,508.12 = 69,338.23/x
  3. Step 3: Cross multiply
    103,280.47x = 142,508.12 × 69,338.23
  4. Step 4: Simplify right side
    103,280.47x = 9,881,260,098.47
  5. Step 5: Solve for x
    x = 9,881,260,098.47/103,280.47
  6. Step 6: Final answer
    x = 95,674.05

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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.