Home / 153,779.76-212,221.31-89,244.03

Finding the Fourth Proportional to 153,779.76, 212,221.31 and 89,244.03

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Solution

The fourth proportional to 153,779.76, 212,221.31 and 89,244.03 is: 123,159.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,779.76 : 212,221.31 = 89,244.03 : x
  2. Step 2: Convert to fraction form
    153,779.76/212,221.31 = 89,244.03/x
  3. Step 3: Cross multiply
    153,779.76x = 212,221.31 × 89,244.03
  4. Step 4: Simplify right side
    153,779.76x = 18,939,484,510.06
  5. Step 5: Solve for x
    x = 18,939,484,510.06/153,779.76
  6. Step 6: Final answer
    x = 123,159.80

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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.