Home / 147,117.15-203,019.77-86,690.34

Finding the Fourth Proportional to 147,117.15, 203,019.77 and 86,690.34

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Solution

The fourth proportional to 147,117.15, 203,019.77 and 86,690.34 is: 119,631.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,117.15 : 203,019.77 = 86,690.34 : x
  2. Step 2: Convert to fraction form
    147,117.15/203,019.77 = 86,690.34/x
  3. Step 3: Cross multiply
    147,117.15x = 203,019.77 × 86,690.34
  4. Step 4: Simplify right side
    147,117.15x = 17,599,852,454.57
  5. Step 5: Solve for x
    x = 17,599,852,454.57/147,117.15
  6. Step 6: Final answer
    x = 119,631.55

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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.