Home / 156,436,238.16-215,871,951.96-86,821,666.20

Finding the Fourth Proportional to 156,436,238.16, 215,871,951.96 and 86,821,666.20

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Solution

The fourth proportional to 156,436,238.16, 215,871,951.96 and 86,821,666.20 is: 119,808,317.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,436,238.16 : 215,871,951.96 = 86,821,666.20 : x
  2. Step 2: Convert to fraction form
    156,436,238.16/215,871,951.96 = 86,821,666.20/x
  3. Step 3: Cross multiply
    156,436,238.16x = 215,871,951.96 × 86,821,666.20
  4. Step 4: Simplify right side
    156,436,238.16x = 18,742,362,555,013,556
  5. Step 5: Solve for x
    x = 18,742,362,555,013,556/156,436,238.16
  6. Step 6: Final answer
    x = 119,808,317.92

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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.