Home / 142,918,779.40-197,222,223.54-77,728,735.24

Finding the Fourth Proportional to 142,918,779.40, 197,222,223.54 and 77,728,735.24

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Solution

The fourth proportional to 142,918,779.40, 197,222,223.54 and 77,728,735.24 is: 107,262,558.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,918,779.40 : 197,222,223.54 = 77,728,735.24 : x
  2. Step 2: Convert to fraction form
    142,918,779.40/197,222,223.54 = 77,728,735.24/x
  3. Step 3: Cross multiply
    142,918,779.40x = 197,222,223.54 × 77,728,735.24
  4. Step 4: Simplify right side
    142,918,779.40x = 15,329,833,996,984,754
  5. Step 5: Solve for x
    x = 15,329,833,996,984,754/142,918,779.40
  6. Step 6: Final answer
    x = 107,262,558.93

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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.