Home / 156,436,246.16-215,871,963-86,821,674.20

Finding the Fourth Proportional to 156,436,246.16, 215,871,963 and 86,821,674.20

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Solution

The fourth proportional to 156,436,246.16, 215,871,963 and 86,821,674.20 is: 119,808,328.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,436,246.16 : 215,871,963 = 86,821,674.20 : x
  2. Step 2: Convert to fraction form
    156,436,246.16/215,871,963 = 86,821,674.20/x
  3. Step 3: Cross multiply
    156,436,246.16x = 215,871,963 × 86,821,674.20
  4. Step 4: Simplify right side
    156,436,246.16x = 18,742,365,240,500,456
  5. Step 5: Solve for x
    x = 18,742,365,240,500,456/156,436,246.16
  6. Step 6: Final answer
    x = 119,808,328.96

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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.