Home / 142,429,129.80-213,643,694.70-85,033,501.80

Finding the Fourth Proportional to 142,429,129.80, 213,643,694.70 and 85,033,501.80

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Solution

The fourth proportional to 142,429,129.80, 213,643,694.70 and 85,033,501.80 is: 127,550,252.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,429,129.80 : 213,643,694.70 = 85,033,501.80 : x
  2. Step 2: Convert to fraction form
    142,429,129.80/213,643,694.70 = 85,033,501.80/x
  3. Step 3: Cross multiply
    142,429,129.80x = 213,643,694.70 × 85,033,501.80
  4. Step 4: Simplify right side
    142,429,129.80x = 18,166,871,497,831,100
  5. Step 5: Solve for x
    x = 18,166,871,497,831,100/142,429,129.80
  6. Step 6: Final answer
    x = 127,550,252.70

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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.