Home / 130,896,936.87-180,638,319.81-72,158,313.21

Finding the Fourth Proportional to 130,896,936.87, 180,638,319.81 and 72,158,313.21

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Solution

The fourth proportional to 130,896,936.87, 180,638,319.81 and 72,158,313.21 is: 99,578,773.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,896,936.87 : 180,638,319.81 = 72,158,313.21 : x
  2. Step 2: Convert to fraction form
    130,896,936.87/180,638,319.81 = 72,158,313.21/x
  3. Step 3: Cross multiply
    130,896,936.87x = 180,638,319.81 × 72,158,313.21
  4. Step 4: Simplify right side
    130,896,936.87x = 13,034,556,458,578,126
  5. Step 5: Solve for x
    x = 13,034,556,458,578,126/130,896,936.87
  6. Step 6: Final answer
    x = 99,578,773.73

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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.