Home / 207,830.64-286,809.46-121,769.02

Finding the Fourth Proportional to 207,830.64, 286,809.46 and 121,769.02

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Solution

The fourth proportional to 207,830.64, 286,809.46 and 121,769.02 is: 168,043.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,830.64 : 286,809.46 = 121,769.02 : x
  2. Step 2: Convert to fraction form
    207,830.64/286,809.46 = 121,769.02/x
  3. Step 3: Cross multiply
    207,830.64x = 286,809.46 × 121,769.02
  4. Step 4: Simplify right side
    207,830.64x = 34,924,506,870.93
  5. Step 5: Solve for x
    x = 34,924,506,870.93/207,830.64
  6. Step 6: Final answer
    x = 168,043.11

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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.