Home / 201,547,471.20-302,321,206.80-86,512,437.60

Finding the Fourth Proportional to 201,547,471.20, 302,321,206.80 and 86,512,437.60

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Solution

The fourth proportional to 201,547,471.20, 302,321,206.80 and 86,512,437.60 is: 129,768,656.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,547,471.20 : 302,321,206.80 = 86,512,437.60 : x
  2. Step 2: Convert to fraction form
    201,547,471.20/302,321,206.80 = 86,512,437.60/x
  3. Step 3: Cross multiply
    201,547,471.20x = 302,321,206.80 × 86,512,437.60
  4. Step 4: Simplify right side
    201,547,471.20x = 26,154,544,538,441,696
  5. Step 5: Solve for x
    x = 26,154,544,538,441,696/201,547,471.20
  6. Step 6: Final answer
    x = 129,768,656.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.