Home / 156,436,220.16-215,871,927.12-86,821,648.20

Finding the Fourth Proportional to 156,436,220.16, 215,871,927.12 and 86,821,648.20

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Solution

The fourth proportional to 156,436,220.16, 215,871,927.12 and 86,821,648.20 is: 119,808,293.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,436,220.16 : 215,871,927.12 = 86,821,648.20 : x
  2. Step 2: Convert to fraction form
    156,436,220.16/215,871,927.12 = 86,821,648.20/x
  3. Step 3: Cross multiply
    156,436,220.16x = 215,871,927.12 × 86,821,648.20
  4. Step 4: Simplify right side
    156,436,220.16x = 18,742,356,512,668,680
  5. Step 5: Solve for x
    x = 18,742,356,512,668,680/156,436,220.16
  6. Step 6: Final answer
    x = 119,808,293.08

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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.