Home / 189,533.12-261,547.80-103,485.20

Finding the Fourth Proportional to 189,533.12, 261,547.80 and 103,485.20

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Solution

The fourth proportional to 189,533.12, 261,547.80 and 103,485.20 is: 142,805.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,533.12 : 261,547.80 = 103,485.20 : x
  2. Step 2: Convert to fraction form
    189,533.12/261,547.80 = 103,485.20/x
  3. Step 3: Cross multiply
    189,533.12x = 261,547.80 × 103,485.20
  4. Step 4: Simplify right side
    189,533.12x = 27,066,326,392.56
  5. Step 5: Solve for x
    x = 27,066,326,392.56/189,533.12
  6. Step 6: Final answer
    x = 142,805.26

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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.