Home / 121,300,036.20-181,572,140.70-87,287,812.20

Finding the Fourth Proportional to 121,300,036.20, 181,572,140.70 and 87,287,812.20

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Solution

The fourth proportional to 121,300,036.20, 181,572,140.70 and 87,287,812.20 is: 130,659,770.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,300,036.20 : 181,572,140.70 = 87,287,812.20 : x
  2. Step 2: Convert to fraction form
    121,300,036.20/181,572,140.70 = 87,287,812.20/x
  3. Step 3: Cross multiply
    121,300,036.20x = 181,572,140.70 × 87,287,812.20
  4. Step 4: Simplify right side
    121,300,036.20x = 15,849,034,918,173,576
  5. Step 5: Solve for x
    x = 15,849,034,918,173,576/121,300,036.20
  6. Step 6: Final answer
    x = 130,659,770.72

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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.