Home / 121,300,052.70-181,572,165.45-87,287,828.70

Finding the Fourth Proportional to 121,300,052.70, 181,572,165.45 and 87,287,828.70

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Solution

The fourth proportional to 121,300,052.70, 181,572,165.45 and 87,287,828.70 is: 130,659,795.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,300,052.70 : 181,572,165.45 = 87,287,828.70 : x
  2. Step 2: Convert to fraction form
    121,300,052.70/181,572,165.45 = 87,287,828.70/x
  3. Step 3: Cross multiply
    121,300,052.70x = 181,572,165.45 × 87,287,828.70
  4. Step 4: Simplify right side
    121,300,052.70x = 15,849,040,074,487,658
  5. Step 5: Solve for x
    x = 15,849,040,074,487,658/121,300,052.70
  6. Step 6: Final answer
    x = 130,659,795.46

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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.