Home / 210,603.12-290,631.60-115,109.76

Finding the Fourth Proportional to 210,603.12, 290,631.60 and 115,109.76

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Solution

The fourth proportional to 210,603.12, 290,631.60 and 115,109.76 is: 158,851.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,603.12 : 290,631.60 = 115,109.76 : x
  2. Step 2: Convert to fraction form
    210,603.12/290,631.60 = 115,109.76/x
  3. Step 3: Cross multiply
    210,603.12x = 290,631.60 × 115,109.76
  4. Step 4: Simplify right side
    210,603.12x = 33,454,533,724.42
  5. Step 5: Solve for x
    x = 33,454,533,724.42/210,603.12
  6. Step 6: Final answer
    x = 158,851.08

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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.