Home / 139,968,155.20-209,952,232.80-99,153,486.40

Finding the Fourth Proportional to 139,968,155.20, 209,952,232.80 and 99,153,486.40

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Solution

The fourth proportional to 139,968,155.20, 209,952,232.80 and 99,153,486.40 is: 148,730,229.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,155.20 : 209,952,232.80 = 99,153,486.40 : x
  2. Step 2: Convert to fraction form
    139,968,155.20/209,952,232.80 = 99,153,486.40/x
  3. Step 3: Cross multiply
    139,968,155.20x = 209,952,232.80 × 99,153,486.40
  4. Step 4: Simplify right side
    139,968,155.20x = 20,817,495,859,584,436
  5. Step 5: Solve for x
    x = 20,817,495,859,584,436/139,968,155.20
  6. Step 6: Final answer
    x = 148,730,229.60

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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.