Home / 159,787,130.79-220,506,287.72-90,187,255.47

Finding the Fourth Proportional to 159,787,130.79, 220,506,287.72 and 90,187,255.47

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Solution

The fourth proportional to 159,787,130.79, 220,506,287.72 and 90,187,255.47 is: 124,458,439.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,787,130.79 : 220,506,287.72 = 90,187,255.47 : x
  2. Step 2: Convert to fraction form
    159,787,130.79/220,506,287.72 = 90,187,255.47/x
  3. Step 3: Cross multiply
    159,787,130.79x = 220,506,287.72 × 90,187,255.47
  4. Step 4: Simplify right side
    159,787,130.79x = 19,886,856,903,344,964
  5. Step 5: Solve for x
    x = 19,886,856,903,344,964/159,787,130.79
  6. Step 6: Final answer
    x = 124,458,439.21

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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.