Home / 118,849,009.20-178,273,513.80-78,034,340.40

Finding the Fourth Proportional to 118,849,009.20, 178,273,513.80 and 78,034,340.40

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Solution

The fourth proportional to 118,849,009.20, 178,273,513.80 and 78,034,340.40 is: 117,051,510.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,849,009.20 : 178,273,513.80 = 78,034,340.40 : x
  2. Step 2: Convert to fraction form
    118,849,009.20/178,273,513.80 = 78,034,340.40/x
  3. Step 3: Cross multiply
    118,849,009.20x = 178,273,513.80 × 78,034,340.40
  4. Step 4: Simplify right side
    118,849,009.20x = 13,911,456,060,173,300
  5. Step 5: Solve for x
    x = 13,911,456,060,173,300/118,849,009.20
  6. Step 6: Final answer
    x = 117,051,510.60

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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.