Home / 138,166.29-190,667.93-77,737.05

Finding the Fourth Proportional to 138,166.29, 190,667.93 and 77,737.05

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Solution

The fourth proportional to 138,166.29, 190,667.93 and 77,737.05 is: 107,276.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,166.29 : 190,667.93 = 77,737.05 : x
  2. Step 2: Convert to fraction form
    138,166.29/190,667.93 = 77,737.05/x
  3. Step 3: Cross multiply
    138,166.29x = 190,667.93 × 77,737.05
  4. Step 4: Simplify right side
    138,166.29x = 14,821,962,019.12
  5. Step 5: Solve for x
    x = 14,821,962,019.12/138,166.29
  6. Step 6: Final answer
    x = 107,276.25

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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.