Home / 142,543,884.12-196,710,561.77-77,353,788.12

Finding the Fourth Proportional to 142,543,884.12, 196,710,561.77 and 77,353,788.12

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Solution

The fourth proportional to 142,543,884.12, 196,710,561.77 and 77,353,788.12 is: 106,748,228.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,543,884.12 : 196,710,561.77 = 77,353,788.12 : x
  2. Step 2: Convert to fraction form
    142,543,884.12/196,710,561.77 = 77,353,788.12/x
  3. Step 3: Cross multiply
    142,543,884.12x = 196,710,561.77 × 77,353,788.12
  4. Step 4: Simplify right side
    142,543,884.12x = 15,216,307,115,735,984
  5. Step 5: Solve for x
    x = 15,216,307,115,735,984/142,543,884.12
  6. Step 6: Final answer
    x = 106,748,228.52

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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.