Home / 139,760,870.40-209,641,305.60-42,716,390.40

Finding the Fourth Proportional to 139,760,870.40, 209,641,305.60 and 42,716,390.40

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Solution

The fourth proportional to 139,760,870.40, 209,641,305.60 and 42,716,390.40 is: 64,074,585.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,760,870.40 : 209,641,305.60 = 42,716,390.40 : x
  2. Step 2: Convert to fraction form
    139,760,870.40/209,641,305.60 = 42,716,390.40/x
  3. Step 3: Cross multiply
    139,760,870.40x = 209,641,305.60 × 42,716,390.40
  4. Step 4: Simplify right side
    139,760,870.40x = 8,955,119,853,975,306
  5. Step 5: Solve for x
    x = 8,955,119,853,975,306/139,760,870.40
  6. Step 6: Final answer
    x = 64,074,585.60

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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.