Home / 145,004,123.20-217,506,184.80-139,430,286.40

Finding the Fourth Proportional to 145,004,123.20, 217,506,184.80 and 139,430,286.40

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Solution

The fourth proportional to 145,004,123.20, 217,506,184.80 and 139,430,286.40 is: 209,145,429.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,004,123.20 : 217,506,184.80 = 139,430,286.40 : x
  2. Step 2: Convert to fraction form
    145,004,123.20/217,506,184.80 = 139,430,286.40/x
  3. Step 3: Cross multiply
    145,004,123.20x = 217,506,184.80 × 139,430,286.40
  4. Step 4: Simplify right side
    145,004,123.20x = 30,326,949,640,435,328
  5. Step 5: Solve for x
    x = 30,326,949,640,435,328/145,004,123.20
  6. Step 6: Final answer
    x = 209,145,429.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.